subject:(Coherent nonlinear magneto optics)

Texas A&M University

1. Novikova, Irina Borisovna. Nonlinear magneto-optic effects in optically dense Rb vapor.

Degree: PhD, Physics, 2004, Texas A&M University

URL: http://hdl.handle.net/1969.1/364

► Nonlinear magneto-optical effects, originated from atomic coherence, are studied both theoretically and experimentally in thermal Rb vapor. The analytical description of the fundamental properties of… (more)

Subjects/Keywords: quantum optics; nonlinear optics; coherent effects; magneto-optic effects

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Novikova, I. B. (2004). Nonlinear magneto-optic effects in optically dense Rb vapor. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/364

Chicago Manual of Style (16^th Edition):

Novikova, Irina Borisovna. “Nonlinear magneto-optic effects in optically dense Rb vapor.” 2004. Doctoral Dissertation, Texas A&M University. Accessed April 10, 2021. http://hdl.handle.net/1969.1/364.

MLA Handbook (7^th Edition):

Novikova, Irina Borisovna. “Nonlinear magneto-optic effects in optically dense Rb vapor.” 2004. Web. 10 Apr 2021.

Vancouver:

Novikova IB. Nonlinear magneto-optic effects in optically dense Rb vapor. [Internet] [Doctoral dissertation]. Texas A&M University; 2004. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1969.1/364.

Council of Science Editors:

Novikova IB. Nonlinear magneto-optic effects in optically dense Rb vapor. [Doctoral Dissertation]. Texas A&M University; 2004. Available from: http://hdl.handle.net/1969.1/364

University of Michigan

2. Dreyer, Elizabeth. Dependence of Radiant Optical Magnetization on Material Composition.

Degree: PhD, Electrical Engineering, 2018, University of Michigan

URL: http://hdl.handle.net/2027.42/143980

► The realization of strong optical magnetism in nominally “non-magnetic” media could lead to novel forms of all-optical switching, energy conversion, or the generation of large… (more)

▼ The realization of strong optical magnetism in nominally “non-magnetic” media could lead to novel forms of all-optical switching, energy conversion, or the generation of large (oscillatory) magnetic fields without current-carrying coils. By advancing understanding of radiant optical magnetization, the research reported in this thesis contributes progress toward these prospects. Experiments and simulations were performed of light scattering in natural dielectrics at non-relativistic optical intensities. The goal was to understand which molecular factors influenced the magnitude of induced magnetic dipole scattering in isotropic materials. The intensity dependence and spectra of cross-polarized scattering in several transparent molecular liquids (CCl4, SiCl4, GeCl4, SnCl4, SiBr4, TMOS, TEOS, TPOS) and crystalline solids (GGG, Quartz) were found to agree with predictions of quantum theory. Additionally, evidence was found for the expected proportionality between the intensity of radiant magnetization and the electric dipole transition moment, together with an inverse proportionality with respect to molecular rotation frequency. By comparing spectra in molecular liquids, it was found that spectral features in the cross-polarized scattering were uniquely attributable to high-frequency librations of magneto-electric (M-E) origin. In solids, optically-induced magnetic scattering in solids reached the same intensity as Rayleigh scattering, far below relativistic conditions. Additionally, all four channels predicted by the quantum theory for second-order (2-photon) M-E processes at the molecular level were observed in experiments on GGG crystals. Two theoretical contributions are presented in this thesis. The first is an extension of the classical Lorentz Oscillator Model from an atomic to a molecular picture. It includes the effect of torque exerted by the optical magnetic field on excited state orbital angular momentum, resulting in an enhancement in the magnetization achievable under non-relativistic conditions in molecular or condensed matter systems. Temporal dynamics are predicted for the first time, taking into account molecular composition. Secondly, the torque Hamiltonian of quantum theory is shown to obey Parity-Time (PT) symmetry, indicating that M-E effects should occur universally. Lastly, results from classical and quantum mechanical models are compared and found to be in very satisfactory agreement. Advisors/Committee Members: Rand, Stephen C (committee member), Kim, Jinsang (committee member), Bhattacharya, Pallab K (committee member), Krushelnick, Karl Michael (committee member), Winful, Herbert Graves (committee member).

Subjects/Keywords: optical magnetization; nonlinear optics; magneto-electric scattering; ultrafast optics; dynamic magneto-optics; magneto-optics; Electrical Engineering; Physics; Engineering; Science

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dreyer, E. (2018). Dependence of Radiant Optical Magnetization on Material Composition. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/143980

Chicago Manual of Style (16^th Edition):

Dreyer, Elizabeth. “Dependence of Radiant Optical Magnetization on Material Composition.” 2018. Doctoral Dissertation, University of Michigan. Accessed April 10, 2021. http://hdl.handle.net/2027.42/143980.

MLA Handbook (7^th Edition):

Dreyer, Elizabeth. “Dependence of Radiant Optical Magnetization on Material Composition.” 2018. Web. 10 Apr 2021.

Vancouver:

Dreyer E. Dependence of Radiant Optical Magnetization on Material Composition. [Internet] [Doctoral dissertation]. University of Michigan; 2018. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/2027.42/143980.

Council of Science Editors:

Dreyer E. Dependence of Radiant Optical Magnetization on Material Composition. [Doctoral Dissertation]. University of Michigan; 2018. Available from: http://hdl.handle.net/2027.42/143980

University of Southern California

3. Bakhtiari, Zahra. All-optical signal processing toward reconfigurable optical networks.

Degree: PhD, Electrical Engineering, 2016, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/611390/rec/617

► In the next generation of optical networks, high speed data rates of 100Gb/s per channel or more will be required. In order to include more… (more)

▼ In the next generation of optical networks, high speed data rates of 100Gb/s per channel or more will be required. In order to include more channels in a single fiber in wavelength division multiplexing (WDM) systems, the channel spacing must be decreased from 200GHz to 50GHz or even smaller. These dense high bit rate WDM systems suffer more severely from the effect of linear and nonlinear degradation in fiber transmission. Phase-modulated format-based WDM systems that have more tolerance for degrading effects, particularly nonlinearity-based degradation have been explored. With growing demand for transmission capacity along with the desire to lower the cost per information bit, spectrally-efficient multilevel modulation format signals such as quadrature amplitude modulation (QAM) have become popular. Higher-order data modulation format signals are quite important to optical communications due to their high spectral efficiency, low electrical baud rate and increased tolerance to fiber-based impairments. Specifically, there is interest in generating quadrature-amplitude-modulation (QAM) signals, and researchers have demonstrated up to 1024-QAM. A laudable goal is the generation of high-order QAM in a tunable fashion such that variable bit rates can be accommodated using optical methods. ❧ In this dissertation, we demonstrate two different techniques for generation of QAM signals. The first method is a polarization-based technique for high speed, tunable QAM signal generation that implements the amplitude control outside the integrated device using a polarizer. The second method is a nonlinearity-based technique that multiplexes initial lower-level modulation format signals at different frequencies into a QAM signal. We also develop fully optical modules to apply various signal processing operations to QAM signals, e.g. demultplexing and information extraction as techniques to avoid coherent receivers in the middle of optical networks. The optical demultiplexing module is based on the phase-sensitive amplification concept, and can demultiplex a QPSK signal into two BPSK sub-channels. We also develop a fully optical module that provides logic/arithmetic relations between symbols carried by a QAM signal. ❧ A disadvantage of higher-order QAM signals is higher sensitivity to noise accumulation, especially in long-haul transmission systems. Amplitude noise not only reduces signal quality but may also be converted into nonlinear phase noise in a transmission line due to the Gordon–Mollenauer effect. Cross-phase modulation in wavelength-division multiplexing (WDM) systems is another cause of amplitude noise to nonlinear phase noise conversion. All-optical regenerators are expected to extend the maximum reach of high-speed transmission systems by eliminating accumulated signal impairments in transmission systems without the need for optical/electronic/optical (O/E/O) conversion. Current phase regeneration schemes are relatively complex and are limited to lower-order modulation formats. Thus, developing all-optical tunable… Advisors/Committee Members: Sawchuk, Alexander A. (Sandy) (Committee Chair), Willner, Alan E. (Committee Member), Armani, Andrea (Committee Member), Haas, Stephan (Committee Member), Molisch, Andreas F. (Committee Member), Jenkins, B. Keith| (Committee Member).

Subjects/Keywords: optical signal processing; coherent systems; nonlinear optics; fiber optics links and subsystems; fiber optics communications

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bakhtiari, Z. (2016). All-optical signal processing toward reconfigurable optical networks. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/611390/rec/617

Chicago Manual of Style (16^th Edition):

Bakhtiari, Zahra. “All-optical signal processing toward reconfigurable optical networks.” 2016. Doctoral Dissertation, University of Southern California. Accessed April 10, 2021. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/611390/rec/617.

MLA Handbook (7^th Edition):

Bakhtiari, Zahra. “All-optical signal processing toward reconfigurable optical networks.” 2016. Web. 10 Apr 2021.

Vancouver:

Bakhtiari Z. All-optical signal processing toward reconfigurable optical networks. [Internet] [Doctoral dissertation]. University of Southern California; 2016. [cited 2021 Apr 10]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/611390/rec/617.

Council of Science Editors:

Bakhtiari Z. All-optical signal processing toward reconfigurable optical networks. [Doctoral Dissertation]. University of Southern California; 2016. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/611390/rec/617

University of Manchester

4. Folland, Thomas. Frequency control of terahertz quantum cascade lasers : theory and measurement.

Degree: PhD, 2017, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/frequency-control-of-terahertz-quantum-cascade-lasers-theory-and-measurement(d4c55769-f053-4b79-aed3-e2fec575adde).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727989

► Terahertz (THz) technology stands to solve a number of problems in everyday life, from next generation wireless communication to spectroscopic identification and imaging. However it… (more)

▼ Terahertz (THz) technology stands to solve a number of problems in everyday life, from next generation wireless communication to spectroscopic identification and imaging. However it is technically challenging to make a high power, compact source for terahertz radiation. The Quantum Cascade Laser (QCL), which produces gain at THz frequencies by exploiting inter-sub-band transitions in quantum wells, offers one solution to this problem. However controlling and detecting the emission from such sources remains a major challenge. This thesis investigates the theory and measurement of emission frequencies from aperiodic lattice THz QCLs. Crucially, realising both frequency control and detection provides a complete system for coherent THz characterisation of devices at precise, user defined frequencies. The author starts by studying the emission frequencies and threshold of discretely tuned aperiodic lattice lasers. This is achieved using a numerical transfer matrix method (TMM), which allows the calculation of the aperiodic lattice threshold spectrum for the first time. Calculations reveal that the low threshold modes of aperiodic lattice lasers form at peaks in the electromagnetic density of modes. This shows that lasing in aperiodic lattices arises from slow light propagation induced by multiple photonic band gaps, leading to both band edge and defect laser modes. Frequency selective lasing is maintained even under the influence of external facet feedback, albeit at the cost of precise knowledge of the mode frequency. Importantly this framework allows the understanding of essentially any aperiodic lattice laser system. Most significantly, the TMM is exploited in order to understand how graphene can be used to control a THz laser. Graphene interacts strongly with THz waves, and can be easily integrated with semiconductor structures such as lasers and waveguides. Here, numerical calculations reveal that graphene can be introduced into the waveguide of a THz QCL, generating electrically tunable THz surface plasmons. Such surface plasmons couple into an aperiodic lattice to change the scattering strength of each individual grating element. The TMM reveals that this change in scattering strength controls the modal selectivity of an aperiodic lattice THz QCL. This hypothesis successfully explains both earlier experiments and those performed by the author. Crucially, this model was central to a publication in the journal Science. Finally, this thesis demonstrates a novel coherent detection system for the characterisation of THz QCL emission. The technique exploits non-linear up-conversion of THz waves to a telecoms frequency side-band, a process shown to be sensitive to THz waveguide dispersion. By mixing the up-converted THz wave with a near infra-red local oscillator laser, coherent detection of QCL emission using all fibre coupled components is demonstrated for the first time. This measurement allows for the characterisation of laser emission with high frequency and temporal resolution. Specifically sub-microsecond pulses of…

Subjects/Keywords: 621.36; Coherent Detection; Plasmonics; Nonlinear Optics; QCL; Lasers; Graphene

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Folland, T. (2017). Frequency control of terahertz quantum cascade lasers : theory and measurement. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/frequency-control-of-terahertz-quantum-cascade-lasers-theory-and-measurement(d4c55769-f053-4b79-aed3-e2fec575adde).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727989

Chicago Manual of Style (16^th Edition):

Folland, Thomas. “Frequency control of terahertz quantum cascade lasers : theory and measurement.” 2017. Doctoral Dissertation, University of Manchester. Accessed April 10, 2021. https://www.research.manchester.ac.uk/portal/en/theses/frequency-control-of-terahertz-quantum-cascade-lasers-theory-and-measurement(d4c55769-f053-4b79-aed3-e2fec575adde).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727989.

MLA Handbook (7^th Edition):

Folland, Thomas. “Frequency control of terahertz quantum cascade lasers : theory and measurement.” 2017. Web. 10 Apr 2021.

Vancouver:

Folland T. Frequency control of terahertz quantum cascade lasers : theory and measurement. [Internet] [Doctoral dissertation]. University of Manchester; 2017. [cited 2021 Apr 10]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/frequency-control-of-terahertz-quantum-cascade-lasers-theory-and-measurement(d4c55769-f053-4b79-aed3-e2fec575adde).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727989.

Council of Science Editors:

Folland T. Frequency control of terahertz quantum cascade lasers : theory and measurement. [Doctoral Dissertation]. University of Manchester; 2017. Available from: https://www.research.manchester.ac.uk/portal/en/theses/frequency-control-of-terahertz-quantum-cascade-lasers-theory-and-measurement(d4c55769-f053-4b79-aed3-e2fec575adde).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727989

5. Hinschberger, Yannick. Etude théorique des effets relativistes induits par une impulsion lumineuse ultra-rapide dans la matière : Theoretical study of relativistic corrections induced by an ultra-short and intense light pulse in matter.

Degree: Docteur es, Physique, 2012, Université de Strasbourg

URL: http://www.theses.fr/2012STRAE041

►

Ce travail de thèse s’intéresse aux corrections relativistes induites par une impulsion lumineuse ultra-brève et intense dans la matière condensée. Il s’inscrit dans la thématique… (more)

▼

Ce travail de thèse s’intéresse aux corrections relativistes induites par une impulsion lumineuse ultra-brève et intense dans la matière condensée. Il s’inscrit dans la thématique nouvelle de la désaimantation ultra-rapide cohérente de systèmes ferromagnétiques induite par une impulsion laser femto-seconde [Nature 5, 515 (2009)] [1]. Un couplage de nature relativiste entre les spins et les photons a été proposé pour expliquer les résultats expérimentaux observés dans [1]. La première partie de ce travail étudie la limite non relativiste du formalisme de Dirac en présence d’un champ électromagnétique dépendant du temps. En utilisant la transformation de Foldy-Wouthuysen , le hamiltonien électronique de Dirac en présence d’un champ électromagnétique dépendant du temps est développé au cinquième ordre en 1/m. Les résultats obtenus ont permis de postuler une expression générale de l’interaction directe entre le spin et le champ électromagnétique sous la forme d’un développement en série entière. Un travail similaire est réalisé dans le cadre du problème relativiste à deux électrons en interaction coulombienne. La diagonalisation du hamiltonien de Breit au troisième ordre en 1/m fait apparaître une interaction singulière entre le spin, le champ coulombien et le champ électromagnétique externe dépendant du temps. Dans la deuxième partie, on propose un modèle classique pour modéliser une expérience de magnéto-optique non-linéaire réalisée sur des échantillons ferromagnétiques. Les prédictions théoriques des angles de rotation Faraday sont comparées aux résultats expérimentaux de la référence [1] et permettent d’ouvrir une discussion à propos des mécanismes physiques gouvernant les phénomènes magnéto-optiques observés. Le rôle joué par l’interaction spin-orbite entre les spins et le champ électrique du laser est discuté.

This thesis focuses on the relativistic corrections induced by an ultra-short and intense light pulse in condensed matter. It is part of the new theme of the coherent ultra-fast demagnetization of ferromagnetic systems induced by a femtosecond laser pulse [ Nature, 5, 515 (2009)] [1]. A relativistic coupling between spins and photons has been proposed to explain the experimental results obtained in [1]. The first part of this work focuses on the nonrelativistic limit of the Dirac’s formalism. By means of the Foldy–Wouthuysen transformation the nonrelativistic approximation of the external-electromagnetic-field Dirac equation to fifth order in powers of 1/m is obtained. Generalizing this result we postulate a general expression of the direct spin–field electronic hamiltonian valid at any order in 1/m. A similar work is performed on a two-interacting electrons system described with the Breit hamiltonian, whose the diagonalization at third order in 1/m illustrates an original coupling between the spin, the coulombian interaction and the time-dependent external electromagnetic field. In a second part, a classical model is developed for modeling ultrafast nonlinear coherent magneto-optical experiments…

Advisors/Committee Members: Hervieux, Paul-Antoine (thesis director).

Subjects/Keywords: Equation de Dirac; Dynamique quantique relativiste; Magnéto-optique non lin´eaire; Transformation de Foldy-Wouthuysen; Magnéto-optique non cohérente; Dirac equation; Nonrelativistic limit; Coherent nonlinear magneto-optics; Foldy-Wouthuysen Transformation; Ultrafast demagnetization; 530.1

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hinschberger, Y. (2012). Etude théorique des effets relativistes induits par une impulsion lumineuse ultra-rapide dans la matière : Theoretical study of relativistic corrections induced by an ultra-short and intense light pulse in matter. (Doctoral Dissertation). Université de Strasbourg. Retrieved from http://www.theses.fr/2012STRAE041

Chicago Manual of Style (16^th Edition):

Hinschberger, Yannick. “Etude théorique des effets relativistes induits par une impulsion lumineuse ultra-rapide dans la matière : Theoretical study of relativistic corrections induced by an ultra-short and intense light pulse in matter.” 2012. Doctoral Dissertation, Université de Strasbourg. Accessed April 10, 2021. http://www.theses.fr/2012STRAE041.

MLA Handbook (7^th Edition):

Hinschberger, Yannick. “Etude théorique des effets relativistes induits par une impulsion lumineuse ultra-rapide dans la matière : Theoretical study of relativistic corrections induced by an ultra-short and intense light pulse in matter.” 2012. Web. 10 Apr 2021.

Vancouver:

Hinschberger Y. Etude théorique des effets relativistes induits par une impulsion lumineuse ultra-rapide dans la matière : Theoretical study of relativistic corrections induced by an ultra-short and intense light pulse in matter. [Internet] [Doctoral dissertation]. Université de Strasbourg; 2012. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2012STRAE041.

Council of Science Editors:

Hinschberger Y. Etude théorique des effets relativistes induits par une impulsion lumineuse ultra-rapide dans la matière : Theoretical study of relativistic corrections induced by an ultra-short and intense light pulse in matter. [Doctoral Dissertation]. Université de Strasbourg; 2012. Available from: http://www.theses.fr/2012STRAE041

Rice University

6. Zhang, Yu. Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection.

Degree: PhD, Natural Sciences, 2015, Rice University

URL: http://hdl.handle.net/1911/90374

► Metallic nanoparticles support collective oscillations of conduction-band electrons, in response to light incidences. Such phenomenon is called localized surface plasmons, which confine large electromagnetic fields… (more)

▼ Metallic nanoparticles support collective oscillations of conduction-band electrons, in response to light incidences. Such phenomenon is called localized surface plasmons, which confine large electromagnetic fields in sub-wavelength dimensions, enabling the light manipulation at the nanoscale. Plasmonic nanoparticles have established many promising applications, such as infrared photodetections, photothermal generation steam, chemical photocatalysis, cancer therapy and surface-enhanced spectroscopy. More interesting, plasmonic nanostructures could generate strong nonlinear-optical effects by relatively low excitation powers, and have been widely used in different processes like second-harmonic generations (SHG), difference-frequency generation (DFG), third-harmonic generation (THG), optical four-wave mixing (FWM) and surface-enhanced Raman scattering (SERS). This thesis will focused on two types of second-order and two types of third-order nonlinear-optical processes, enhanced by artificial plasmonic nanostructures. Firstly, the second-harmonic generation on a single nanocup is studied, and the signal is demonstrated to have increasing intensity as the 3D symmetry of the nanocup is reduced. Then, optical four-wave mixing is generated on a plasmonic nanocluster which supports a coherent oscillation of two Fano resonances. The electric fields from both Fano resonances add coherently resulting in strong fields and correspondingly large signals. This nanocluster has a large color-conversion efficiency, and could be used for building blocks of optical processors that convert two input colors into a third color. Later, one specific application of four-wave mixing, the coherent anti-Stokes Raman scattering (CARS) is studied. By exploiting the unique light harvesting properties of a Fano resonance of a specially designed nano-quadrumer, the surface-enhanced CARS (SECARS) technique amplifies the Raman signals of molecules on the quadrumer by about 100 billion times. This enables the accurate identification of a single molecule with less than 20 atoms. Finally, a plasmon-enhanced optical parametric amplifier (OPA) is designed: A BaTiO3 nanosphere is used as the nonlinear OPA medium; A nanoshell wrapping this nanosphere is used as a triply resonant cavity for all the pump, signal and idler beams; The generated idler beam has a wide tuning range in the near-infrared by changing the delay between the narrowband pump beam and broadband signal beam. This surface-plasmon-enhanced OPA could be an efficient light source working in the infrared regime, with large wavelength tunabilities and nanoscale dimensions easily integrated into the next-generation optoelectronic devices. Advisors/Committee Members: Halas, Naomi J (committee member), Nordlander, Peter J (committee member), Link, Stephan (committee member).

Subjects/Keywords: Nonlinear Optics; Nonlinear Plasmonics; Second-harmonic Generation; Four-wave Mixing; Optical Parametric Amplification; Coherent Raman

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhang, Y. (2015). Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/90374

Chicago Manual of Style (16^th Edition):

Zhang, Yu. “Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection.” 2015. Doctoral Dissertation, Rice University. Accessed April 10, 2021. http://hdl.handle.net/1911/90374.

MLA Handbook (7^th Edition):

Zhang, Yu. “Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection.” 2015. Web. 10 Apr 2021.

Vancouver:

Zhang Y. Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1911/90374.

Council of Science Editors:

Zhang Y. Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/90374

University of California – Irvine

7. Alfonso García, Alba. Exploring lipids with nonlinear optical microscopy in multiple biological systems.

Degree: Biomedical Engineering, 2016, University of California – Irvine

URL: http://www.escholarship.org/uc/item/2nm4q3vx

► Lipids are crucial biomolecules for the well being of humans. Altered lipid metabolism may give rise to a variety of diseases that affect organs from… (more)

▼ Lipids are crucial biomolecules for the well being of humans. Altered lipid metabolism may give rise to a variety of diseases that affect organs from the cardiovascular to the central nervous system. A deeper understanding of lipid metabolic processes would spur medical research towards developing precise diagnostic tools, treatment methods, and preventive strategies for reducing the impact of lipid diseases. Lipid visualization remains a complex task because of the perturbative effect exerted by traditional biochemical assays and most fluorescence markers. Coherent Raman scattering (CRS) microscopy enables interrogation of biological samples with minimum disturbance, and is particularly well suited for label-free visualization of lipids, providing chemical specificity without compromising on spatial resolution. Hyperspectral imaging yields large datasets that benefit from tailored multivariate analysis. In this thesis, CRS microscopy was combined with Raman spectroscopy and other label-free nonlinear optical techniques to analyze lipid metabolism in multiple biological systems. We used nonlinear Raman techniques to characterize Meibum secretions in the progression of dry eye disease, where the lipid and protein contributions change in ratio and phase segregation. We employed similar tools to examine lipid droplets in mice livers aboard a spaceflight mission, which lose their retinol content contributing to the onset of nonalcoholic fatty-liver disease. We also focused on atherosclerosis, a disease that revolves around lipid-rich plaques in arterial walls. We examined the lipid content of macrophages, whose variable phenotype gives rise to contrasting healing and inflammatory activities. We also proposed new label-free markers, based on lifetime imaging, for macrophage phenotype, and to detect products of lipid oxidation. Cholesterol was also detected in hepatitis C virus infected cells, and in specific strains of age-related macular degeneration diseased cells by spontaneous Raman spectroscopy. We used synthesized highly-deuterated cholesterol to track its compartmentalization in adrenal cells, revealing heterogeneous lipid droplet content. These examples illustrate the potential of label-free nonlinear optical microscopy for unveiling complex physiological processes by direct visualization of lipids. Detailed image analysis and combined microscopy modalities will continue to reveal and quantify fundamental biology that will support the advance of biomedicine.

Subjects/Keywords: Optics; Biology; Physics; biophotonics; coherent Raman scattering; lipids; microscopy; nonlinear optics; spectroscopy

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Alfonso García, A. (2016). Exploring lipids with nonlinear optical microscopy in multiple biological systems. (Thesis). University of California – Irvine. Retrieved from http://www.escholarship.org/uc/item/2nm4q3vx

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Alfonso García, Alba. “Exploring lipids with nonlinear optical microscopy in multiple biological systems.” 2016. Thesis, University of California – Irvine. Accessed April 10, 2021. http://www.escholarship.org/uc/item/2nm4q3vx.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Alfonso García, Alba. “Exploring lipids with nonlinear optical microscopy in multiple biological systems.” 2016. Web. 10 Apr 2021.

Vancouver:

Alfonso García A. Exploring lipids with nonlinear optical microscopy in multiple biological systems. [Internet] [Thesis]. University of California – Irvine; 2016. [cited 2021 Apr 10]. Available from: http://www.escholarship.org/uc/item/2nm4q3vx.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Alfonso García A. Exploring lipids with nonlinear optical microscopy in multiple biological systems. [Thesis]. University of California – Irvine; 2016. Available from: http://www.escholarship.org/uc/item/2nm4q3vx

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Iowa State University

8. Dedic, Chloe Elizabeth. Hybrid fs/ps coherent anti-Stokes Raman scattering for multiparameter measurements of combustion and nonequilibrium.

Degree: 2017, Iowa State University

URL: https://lib.dr.iastate.edu/etd/15509

► Hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering (fs/ps CARS) is developed for measuring internal energy distributions, species concentration, and pressure for highly dynamic gas-phase environments. Systems… (more)

▼ Hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering (fs/ps CARS) is developed for measuring internal energy distributions, species concentration, and pressure for highly dynamic gas-phase environments. Systems of interest include next-generation combustors, plasma-based manufacturing and plasma-assisted combustion, and high-speed aerodynamic flow. These challenging environments include spatial variations and fast dynamics that require the spatial and temporal resolution offered by hybrid fs/ps CARS. A novel dual-pump fs/ps CARS approach is developed to simultaneously excite pure-rotational and rovibrational Raman coherences for dynamic thermometry (300 – 2400 K) and detection of major combustion species. This approach was also used to measure single-shot vibrational and rotational energy distributions of the nonequilibrium environment of a dielectric barrier discharge plasma. Detailed spatial distributions and shot-to-shot fluctuations of rotational and vibrational temperatures spanning 325 – 450 K and 1200 – 5000 K were recorded across the plasma and surrounding flow, and are compared to plasma emission spectroscopy measurements. Dual-pump hybrid fs/ps CARS allows for concise, kHz-rate measurements of vibrational and rotational energy distributions or temperatures at equilibrium and nonequilibrium without nonresonant wave-mixing or molecular collisional interference. Additionally, a highly transient ns laser spark is explored using CARS to measure temperature and pressure behind the shock wave and temperature of the expanding plasma kernel. Vibrational energy distributions at the exit of a microscale gaseous detonation tube are presented. Theory required to model fs/ps CARS response, including nonthermal energy distributions, is presented. The impact of nonequilibrium on measurement accuracy is explored, and a coherent line-mixing model is validated with high-pressure measurements. Temperature and pressure sensitivity are investigated for multiple measurement configurations, and accuracy and precision is quantified as a function of signal-to-noise for the fs/ps CARS system.

Subjects/Keywords: Coherent anti-Stokes Raman Scattering; Combustion diagnostics; Nonlinear optics; four-wave mixing; Nonlinear Spectroscopy; Plasma diagnostics; Mechanical Engineering; Optics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dedic, C. E. (2017). Hybrid fs/ps coherent anti-Stokes Raman scattering for multiparameter measurements of combustion and nonequilibrium. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/15509

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dedic, Chloe Elizabeth. “Hybrid fs/ps coherent anti-Stokes Raman scattering for multiparameter measurements of combustion and nonequilibrium.” 2017. Thesis, Iowa State University. Accessed April 10, 2021. https://lib.dr.iastate.edu/etd/15509.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dedic, Chloe Elizabeth. “Hybrid fs/ps coherent anti-Stokes Raman scattering for multiparameter measurements of combustion and nonequilibrium.” 2017. Web. 10 Apr 2021.

Vancouver:

Dedic CE. Hybrid fs/ps coherent anti-Stokes Raman scattering for multiparameter measurements of combustion and nonequilibrium. [Internet] [Thesis]. Iowa State University; 2017. [cited 2021 Apr 10]. Available from: https://lib.dr.iastate.edu/etd/15509.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dedic CE. Hybrid fs/ps coherent anti-Stokes Raman scattering for multiparameter measurements of combustion and nonequilibrium. [Thesis]. Iowa State University; 2017. Available from: https://lib.dr.iastate.edu/etd/15509

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Michigan

9. Jasensky, Joshua A. Nonlinear Optical Methods for Noninvasive Analytics.

Degree: PhD, Biophysics, 2015, University of Michigan

URL: http://hdl.handle.net/2027.42/113659

► To date, many of the current tools and technologies used to explore biophysical processes and phenomena are limited in part by their inability to probe… (more)

▼ To date, many of the current tools and technologies used to explore biophysical processes and phenomena are limited in part by their inability to probe without external perturbation. Factors such as size restrictions, samples used for non-terminal studies, and small molecule dynamics cannot be addressed by these techniques. This has not only driven the field of noninvasive analytics, but has had a direct impact on shaping the next generation of biological and clinical assays. Highlights of my thesis work herein focus on the development of nonlinear optical spectroscopy and imaging modalities, sum frequency generation (SFG) spectroscopy and coherent anti-Stokes Raman scattering (CARS) microscopy. Each has their own unique qualities that make them ideal as noninvasive tools and techniques. Using these two techniques, my studies address fundamental questions about: (1) the orientation and behavior of chemically immobilized peptides on abiotic surfaces for the rational design of improved biosensors and bioactive textiles, (2) understanding the relations between cytosolic lipids, cellular energy homeostasis/consumption, and developmental biology in female reproductive cells, and (3) the ability to classify and measure male reproductive health as it relates to acrosome integrity. Results from SFG, a surface-sensitive spectroscopy, demonstrate that surface tethering mechanisms govern both the orientation and activity of antimicrobial peptide MSI-78 on surfaces. Attachment of the n-terminus of this peptide results in an orientation perpendicular to the surface normal (lying down) and higher antimicrobial activity whereas c-terminus attachment leads to a parallel orientation (standing up) and lower activity. Other methods complementary to SFG including circular dichroism (CD) spectroscopy and coarse-grained simulation molecular dynamics simulations also support this conclusion. CARS, a live cell noninvasive microscopy, is used to evaluate the contributions of lipid in oocyte growth, development, and for metabolic disease. Results show that lipid content fluctuates as oocytes progress through meiosis, indicated by an increase in content as the oocytes grow and a decrease as oocytes resume meiosis. Lipid content is also higher for oocytes from females who exhibit metabolic disease. As for male reproductive cells, CARS microscopy is beginning to be used for the identification of acrosome reaction, an important predictor of male infertility. Advisors/Committee Members: Chen, Zhan (committee member), Smith, Gary D. (committee member), Ogilvie, Jennifer P. (committee member), Walter, Nils G. (committee member), Biteen, Julie Suzanne (committee member).

Subjects/Keywords: Nonlinear Optics; Coherent Anti-Stokes Raman Scattering Microscopy; Sum Frequency Generation Spectroscopy; Physics; Science

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jasensky, J. A. (2015). Nonlinear Optical Methods for Noninvasive Analytics. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/113659

Chicago Manual of Style (16^th Edition):

Jasensky, Joshua A. “Nonlinear Optical Methods for Noninvasive Analytics.” 2015. Doctoral Dissertation, University of Michigan. Accessed April 10, 2021. http://hdl.handle.net/2027.42/113659.

MLA Handbook (7^th Edition):

Jasensky, Joshua A. “Nonlinear Optical Methods for Noninvasive Analytics.” 2015. Web. 10 Apr 2021.

Vancouver:

Jasensky JA. Nonlinear Optical Methods for Noninvasive Analytics. [Internet] [Doctoral dissertation]. University of Michigan; 2015. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/2027.42/113659.

Council of Science Editors:

Jasensky JA. Nonlinear Optical Methods for Noninvasive Analytics. [Doctoral Dissertation]. University of Michigan; 2015. Available from: http://hdl.handle.net/2027.42/113659

Heriot-Watt University

10. Tookey, Andrew. Ultrafast four-wave-mixing in wide-bandgap II-VI semiconductors.

Degree: PhD, 1998, Heriot-Watt University

URL: http://hdl.handle.net/10399/1261

Subjects/Keywords: 535; Nonlinear optics; Coherent optical interactions

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tookey, A. (1998). Ultrafast four-wave-mixing in wide-bandgap II-VI semiconductors. (Doctoral Dissertation). Heriot-Watt University. Retrieved from http://hdl.handle.net/10399/1261

Chicago Manual of Style (16^th Edition):

Tookey, Andrew. “Ultrafast four-wave-mixing in wide-bandgap II-VI semiconductors.” 1998. Doctoral Dissertation, Heriot-Watt University. Accessed April 10, 2021. http://hdl.handle.net/10399/1261.

MLA Handbook (7^th Edition):

Tookey, Andrew. “Ultrafast four-wave-mixing in wide-bandgap II-VI semiconductors.” 1998. Web. 10 Apr 2021.

Vancouver:

Tookey A. Ultrafast four-wave-mixing in wide-bandgap II-VI semiconductors. [Internet] [Doctoral dissertation]. Heriot-Watt University; 1998. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10399/1261.

Council of Science Editors:

Tookey A. Ultrafast four-wave-mixing in wide-bandgap II-VI semiconductors. [Doctoral Dissertation]. Heriot-Watt University; 1998. Available from: http://hdl.handle.net/10399/1261

11. Odier, Alice. Combinaison cohérente de convertisseurs de fréquences optiques : Coherent combining of optical frequency converters.

Degree: Docteur es, Lasers, molécules, rayonnement atmosphérique, 2018, Université Paris-Saclay (ComUE)

URL: http://www.theses.fr/2018SACLX003

►

Les convertisseurs de fréquences optiques utilisant les processus non linéaires d’ordre deux permettent d’étendre la gamme spectrale accessible aux sources lasers. Celle-ci est en effet… (more)

▼

Les convertisseurs de fréquences optiques utilisant les processus non linéaires d’ordre deux permettent d’étendre la gamme spectrale accessible aux sources lasers. Celle-ci est en effet limitée par les bandes de gain des milieux lasers disponibles. Par ailleurs, la combinaison cohérente par contrôle actif de la phase est une technique efficace permettant la montée en puissance des sources lasers. Elle nécessite toutefois des modulateurs de phase rapides qui ne sont disponibles commercialement qu’aux longueurs d’onde standard.L’objectif de cette thèse est d'appliquer la combinaison cohérente à des convertisseurs de fréquences en utilisant la relation de phase inhérente au processus non linéaire.Cela permet de contrôler la phase de l’onde générée en agissant sur la phase de l’onde de pompe. C’est ce qu’on appelle le contrôle indirect de la phase.Pour cela, une étude théorique a été menée afin de s’assurer de la compatibilité de la technique de combinaison cohérente par marquage en fréquence avec le contrôle indirect de la phase.La démonstration expérimentale a d’abord été effectuée dans le cas le plus simple, la génération de seconde harmonique, qui met en jeu trois ondes dont deux dégénérées.Enfin, on s’est intéressé au cas de la génération de différence de fréquences dans le moyen infrarouge, où trois ondes sont mises en jeu.Dans ces deux cas, la qualité de mise en phase mesurée est excellente.

Laser emission wavelength is limited by the gain bandwidth of available laser media. Optical frequency converters rely on second order nonlinear processes to overcome this limitation, and give access to new wavelengths outside of the emission range of lasers.Besides, coherent beam combining with active phase control is an efficient technique to power scale laser sources. However, it requires fast phase modulators, some commercially available devices, but only at standard laser wavelengths.The objective of this thesis is to perform coherent combining of frequency converters, thanks to the phase-matching condition required for efficient nonlinear processes to take place.This relation allows for indirect phase control, where the converted-wave phase is tuned through direct phase control of the pump wave.A theoretical study has been carried out to confirm that indirect phase control was compatible with frequency-tagging coherent combining.Then, coherent combining through indirect phase control has been demonstrated experimentally in the simplest case of the second harmonic generators, where two of the three waves involved are degenerate.Finally, coherent combining has been experimentally performed in the non-degenerate case of mid-infrared difference frequency generators.In both experimental demonstrations, an excellent beam combination efficiency has been achieved.

Advisors/Committee Members: Lefebvre, Michel (thesis director).

Subjects/Keywords: Laser; Combinaison cohérente; Optique non linéaire; Laser; Coherent combining; Nonlinear optics; 535.2

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Odier, A. (2018). Combinaison cohérente de convertisseurs de fréquences optiques : Coherent combining of optical frequency converters. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2018SACLX003

Chicago Manual of Style (16^th Edition):

Odier, Alice. “Combinaison cohérente de convertisseurs de fréquences optiques : Coherent combining of optical frequency converters.” 2018. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed April 10, 2021. http://www.theses.fr/2018SACLX003.

MLA Handbook (7^th Edition):

Odier, Alice. “Combinaison cohérente de convertisseurs de fréquences optiques : Coherent combining of optical frequency converters.” 2018. Web. 10 Apr 2021.

Vancouver:

Odier A. Combinaison cohérente de convertisseurs de fréquences optiques : Coherent combining of optical frequency converters. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2018. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2018SACLX003.

Council of Science Editors:

Odier A. Combinaison cohérente de convertisseurs de fréquences optiques : Coherent combining of optical frequency converters. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2018. Available from: http://www.theses.fr/2018SACLX003

University of Toronto

12. Lavigne, Cyrille. Coherent Control of Molecular Processes in the Condensed Phase: Theory and Applications.

Degree: PhD, 2019, University of Toronto

URL: http://hdl.handle.net/1807/97533

► Coherent control schemes are interference-based procedures for the control of quantum mechanical systems informed by a careful analysis of the physical conditions on interference. In… (more)

▼ Coherent control schemes are interference-based procedures for the control of quantum mechanical systems informed by a careful analysis of the physical conditions on interference. In this thesis, the coherent control approach is applied to experimental phase control in the condensed phase. Specifically, coherent control schemes are proposed as mechanisms for experimental manifestations of phase interference. First, a simulation of a ``black box'' feedback control experiment using realistic pulse shaping is shown to automatically find a specific, previously devised coherent control scheme. Qualitative features of experiments performed in this way are reproduced. Second, an analysis of interference in one-photon phase control yields an upper bound on the duration of phase effects. One-photon phase control was previously shown to be possible only over the transient (as opposed to steady-state) value of observables. The bound described here quantifies this statement and provide a rigorous definition of ``transient'' control. We propose that phase control beyond this bound, as reported in a number of weak-field experimental and computational studies, is the result of previously unaccounted for multiphoton effects. Third, we analyze a recent experiment showing phase control of the macroscopic current emanating from living brain cells photostimulated by two-photon absorption. We propose mechanisms for the phase dependence of the current that operate over fifteen orders of magnitude in time, from the femtosecond dynamics of light-matter interactions to the macroscopic dynamics of neuron current. Significantly, coherent control is extended to the case of systems repeatedly interacting with pulses of light; we show that macroscopic control is obtained, in this case, from the multi-pulse accumulation of small phase effects. Research into multiphoton control led to the development of a novel algorithm to compute higher order perturbation theory integrals, presented in the final chapter of this thesis. The Fourier-Laplace Inversion of the Perturbation Theory (FLIPT) method is a highly efficient, numerically exact, ``black box'' integration algorithm. The FLIPT method exploits the specific structure of the multidimensional perturbation theory integrals to obtain an exponential improvement in performance over standard quadrature. Advisors/Committee Members: Brumer, Paul, Chemistry.

Subjects/Keywords: Coherent control; Nonlinear spectroscopy; Quantum control; Quantum dynamics; Quantum optics; Ultrafast; 0494

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lavigne, C. (2019). Coherent Control of Molecular Processes in the Condensed Phase: Theory and Applications. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/97533

Chicago Manual of Style (16^th Edition):

Lavigne, Cyrille. “Coherent Control of Molecular Processes in the Condensed Phase: Theory and Applications.” 2019. Doctoral Dissertation, University of Toronto. Accessed April 10, 2021. http://hdl.handle.net/1807/97533.

MLA Handbook (7^th Edition):

Lavigne, Cyrille. “Coherent Control of Molecular Processes in the Condensed Phase: Theory and Applications.” 2019. Web. 10 Apr 2021.

Vancouver:

Lavigne C. Coherent Control of Molecular Processes in the Condensed Phase: Theory and Applications. [Internet] [Doctoral dissertation]. University of Toronto; 2019. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1807/97533.

Council of Science Editors:

Lavigne C. Coherent Control of Molecular Processes in the Condensed Phase: Theory and Applications. [Doctoral Dissertation]. University of Toronto; 2019. Available from: http://hdl.handle.net/1807/97533

University of Central Florida

13. Reichert, Matthew. Nonlinear Optical Response of Simple Molecules and Two-Photon Semiconductor Lasers.

Degree: 2015, University of Central Florida

URL: https://stars.library.ucf.edu/etd/717

► This dissertation investigates two long standing issues in nonlinear optics: complete characterization of the ultrafast dynamics of simple molecules, and the potential of a two-photon… (more)

▼ This dissertation investigates two long standing issues in nonlinear optics: complete characterization of the ultrafast dynamics of simple molecules, and the potential of a two-photon laser using a bulk semiconductor gain medium. Within the Born-Oppenheimer approximation, nonlinear refraction in molecular liquids and gases can arise from both bound-electronic and nuclear origins. Knowledge of the magnitudes, temporal dynamics, polarization and spectral dependences of each of these mechanisms is important for many applications including filamentation, white-light continuum generation, all-optical switching, and nonlinear spectroscopy. In this work the nonlinear dynamics of molecules are investigated in both liquid and gas phase with the recently developed beam deflection technique which measures nonlinear refraction directly in the time domain. Thanks to the utility of the beam deflection technique we are able to completely determine the third-order response function of one of the most important molecular liquids in nonlinear optics, carbon disulfide. This allows the prediction of essentially any nonlinear refraction or two-photon absorption experiment on CS2. Measurements conducted on air (N2 and O2) and gaseous CS2 reveal coherent rotational revivals in the degree of alignment of the ensemble at a period that depends on its moment of inertia. This allows measurement of the rotational and centrifugal distortion constants of the isolated molecules. Additionally, the rotational contribution to the beam deflection measurement can be eliminated thanks to the particular polarization dependence of the mechanism. At a specific polarization, the dominant remaining contribution is due to the bound-electrons. Thus both the bound-electronic nonlinear refractive index of air, and second hyperpolarizability of isolated CS2 molecules, are measured directly. The later agrees well with liquid CS2 measurements, where local field effects are significant. The second major portion of this dissertation addresses the possibility of using bulk semiconductors as a two-photon gain medium. A two-photon laser has been a goal of nonlinear optics since shortly after the original laser*s development. In this case, two-photons are emitted from a single electronic transition rather than only one. This processes is known as two-photon gain (2PG). Semiconductors have large two-photon absorption coefficients, which are enhanced by ~2 orders of magnitude when using photons of very different energies, e.g., ћωa≈10ћωb. This enhancement should translate into large 2PG coefficients as well, given the inverse relationship between absorption and gain. Here, we experimentally demonstrate both degenerate and nondegenerate 2PG in optically excited bulk GaAs via pump-probe experiments. This constitutes, to my knowledge, the first report of nondegenerate two-photon gain. Competition between 2PG and competing processes, namely intervalence band and nondegenerate three-photon absorption (ND-3PA), in both cases are theoretically analyzed. Experimental measurements… Advisors/Committee Members: Van Stryland, Eric.

Subjects/Keywords: Nonlinear optics; nonlinear optical spectroscopy; nonlinear optical materials; kerr effect; ultrafast nonlinear optics; multiphoton processes; semiconductor nonlinear optics; raman effect; coherent transients; Electromagnetics and Photonics; Optics; Dissertations, Academic – Optics and Photonics; Optics and Photonics – Dissertations, Academic

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Reichert, M. (2015). Nonlinear Optical Response of Simple Molecules and Two-Photon Semiconductor Lasers. (Doctoral Dissertation). University of Central Florida. Retrieved from https://stars.library.ucf.edu/etd/717

Chicago Manual of Style (16^th Edition):

Reichert, Matthew. “Nonlinear Optical Response of Simple Molecules and Two-Photon Semiconductor Lasers.” 2015. Doctoral Dissertation, University of Central Florida. Accessed April 10, 2021. https://stars.library.ucf.edu/etd/717.

MLA Handbook (7^th Edition):

Reichert, Matthew. “Nonlinear Optical Response of Simple Molecules and Two-Photon Semiconductor Lasers.” 2015. Web. 10 Apr 2021.

Vancouver:

Reichert M. Nonlinear Optical Response of Simple Molecules and Two-Photon Semiconductor Lasers. [Internet] [Doctoral dissertation]. University of Central Florida; 2015. [cited 2021 Apr 10]. Available from: https://stars.library.ucf.edu/etd/717.

Council of Science Editors:

Reichert M. Nonlinear Optical Response of Simple Molecules and Two-Photon Semiconductor Lasers. [Doctoral Dissertation]. University of Central Florida; 2015. Available from: https://stars.library.ucf.edu/etd/717

University of California – Merced

14. Lu, Thompson. Optimization and Comparison of Two Different Fiber Optical Parametric Oscillators for Coherent Raman Scattering Techniques.

Degree: Biological Engineering and Small-scale Technologies, 2014, University of California – Merced

URL: http://www.escholarship.org/uc/item/34t099q3

► Coherent Raman Scattering (CRS) microscopy is a technique used to image cells through the use of intrinsic chemical bonds, which allows for label free imaging… (more)

Subjects/Keywords: Optics; Biomedical engineering; Physics; Coherent Raman Scattering; Fiber Optical Parametric Oscillator; Four Wave Mixing; Nonlinear Fiber Optics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lu, T. (2014). Optimization and Comparison of Two Different Fiber Optical Parametric Oscillators for Coherent Raman Scattering Techniques. (Thesis). University of California – Merced. Retrieved from http://www.escholarship.org/uc/item/34t099q3

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lu, Thompson. “Optimization and Comparison of Two Different Fiber Optical Parametric Oscillators for Coherent Raman Scattering Techniques.” 2014. Thesis, University of California – Merced. Accessed April 10, 2021. http://www.escholarship.org/uc/item/34t099q3.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lu, Thompson. “Optimization and Comparison of Two Different Fiber Optical Parametric Oscillators for Coherent Raman Scattering Techniques.” 2014. Web. 10 Apr 2021.

Vancouver:

Lu T. Optimization and Comparison of Two Different Fiber Optical Parametric Oscillators for Coherent Raman Scattering Techniques. [Internet] [Thesis]. University of California – Merced; 2014. [cited 2021 Apr 10]. Available from: http://www.escholarship.org/uc/item/34t099q3.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lu T. Optimization and Comparison of Two Different Fiber Optical Parametric Oscillators for Coherent Raman Scattering Techniques. [Thesis]. University of California – Merced; 2014. Available from: http://www.escholarship.org/uc/item/34t099q3

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

15. Mehta, Nikhil N. Computational Methods and Applications in Optical Imaging and Spectroscopy.

Degree: 2016, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/3n203z084

► This dissertation presents my work in application of computational techniques and the resulting enhancements to several non-linear and ultrafast optical imaging and spectroscopy modalities. The… (more)

▼ This dissertation presents my work in application of computational techniques and the resulting enhancements to several non-linear and ultrafast optical imaging and spectroscopy modalities. The importance of novel computational optical imaging schemes which aim to overcome the limitations of conventional imaging techniques by leveraging the availability of computational resources and the vast body of literature in computational signal processing is emphasized. In particular the computational techniques of compressive sensing and two dimensional phase retrieval are introduced in the broad context as inversion techniques suitable for optical applications including coherent anti-Stokes Raman holography, non-linear spectroscopy, and ultrashort pulse characterization. It is shown that both computational techniques seek to improve key signal metrics such as higher signal to noise ratio (SNR) and better resolution than can be obtained traditionally within the specific imaging modality. Coherent anti-Stokes Raman scattering (CARS) holography is a novel imaging modality which combines the principles of coherent anti-Stokes Raman scattering and holography to provide label-free, chemical selective, scanning-free, and single shot 3D imaging modality. Compressive CARS holography is introduced as a sparsity constrained holographic image reconstruction technique to enhance the optical sectioning capability of CARS holography by suppressing out-of-focus background noise inherent in 3D images processed from a typical single 2D hologram. The advantages of compressive sensing guided signal acquisition strategy in optical spectroscopy is presented by proposing ‘compressive multi-heterodyne optical spectroscopy’ as a novel technique for ultra-high resolution frequency comb spectroscopy. Using numerical simulations, our proposed compressive frequency comb spectroscopy technique is shown to be well-suited for recording narrow line spectra at ultra-high sampling over broad spectral range by leveraging sparsity inherent in such spectra. We next present applications of phase retrieval in optical imaging and spectroscopy. In particular we use 2D phase retrieval technique to enhance the resolution of sum frequency generation vibrational spectroscopy (SFG-VS) whose unique surface selectivity enables qualitative and quantitative study of chemical species at surfaces/interfaces. Specifically, our key contribution is that we show that our 2D phase retrieval based inversion algorithm enables measurement of characteristic molecular vibrational spectra of air/dimethyl sulfoxide interface at resolutions significantly better than that achievable in conventional SFG-VS acquisition system. Lastly, we address the limitation of the commonly used pulse characterization technique: frequency resolved optical gating (FROG) to spatio-temporally characterize the ultrafast pulse. Using a simple spectral holographic recording technique, we present a modified 2D phase retrieval based algorithm to measure the spectral phase at every spatial location in the vicinity… Advisors/Committee Members: Zhiwen Liu, Dissertation Advisor/Co-Advisor.

Subjects/Keywords: Nonlinear optics; spectroscopy; ultrafast optics; two dimensional phase retrieval; coherent Raman spectroscopy; compressive sensing; ultrashort pulse characterization

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mehta, N. N. (2016). Computational Methods and Applications in Optical Imaging and Spectroscopy. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/3n203z084

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mehta, Nikhil N. “Computational Methods and Applications in Optical Imaging and Spectroscopy.” 2016. Thesis, Penn State University. Accessed April 10, 2021. https://submit-etda.libraries.psu.edu/catalog/3n203z084.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mehta, Nikhil N. “Computational Methods and Applications in Optical Imaging and Spectroscopy.” 2016. Web. 10 Apr 2021.

Vancouver:

Mehta NN. Computational Methods and Applications in Optical Imaging and Spectroscopy. [Internet] [Thesis]. Penn State University; 2016. [cited 2021 Apr 10]. Available from: https://submit-etda.libraries.psu.edu/catalog/3n203z084.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mehta NN. Computational Methods and Applications in Optical Imaging and Spectroscopy. [Thesis]. Penn State University; 2016. Available from: https://submit-etda.libraries.psu.edu/catalog/3n203z084

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

16. ALVAREZ, Ammis Sánchez. Armadilha magneto ótica de rubídio e mistura de quatro ondas no vapor atômico.

Degree: 2016, Federal University of Pernambuco

URL: https://repositorio.ufpe.br/handle/123456789/18556

►

Facepe

Neste trabalho apresentamos a caracterização de uma armadilha magneto ótica de átomos de Rb construída em nosso laboratório, juntamente com o seu princípio de… (more)

▼

Facepe

Neste trabalho apresentamos a caracterização de uma armadilha magneto ótica de átomos de Rb construída em nosso laboratório, juntamente com o seu princípio de funcionamento. O resfriamento é feito com lasers de diodo e tem como mecanismo básico a força de pressão de radiação, que é gerada pelos processos de absorção e emissão de fótons, juntamente com a ação de um campo magnético e a polarização dos feixes. O sistema consiste em três pares de feixes contrapropagantes nas direções x, y e z, com polarizações s+ e s, e um campo magnético que varía linearmente no espaço. Conseguimos armadilhar aproximadamente 108 átomos com um tempo de carga da ordem de 2 seg. Em paralelo realizamos medidas de mistura de quatro ondas degenerada em um vapor de átomos de Rb, na configuração de feixes quase-copropagantes. O sinal gerado no processo não linear foi estudado em função da frequência de um dos feixes enquanto o outro tinha sua frequência fixa; e se mostrou independe de qual dos feixes esta sendo sintonizado. Medidas simultâneas da transmissão do feixe de prova indicam que o processo não linear ocorre só na transição cíclica e envolve o grupo de átomos selecionados pelo feixe de frequência fixa.

In this work we present a characterization of magneto optical trap of 87Rb atoms built in our lab, along with its operating principle. The cooling is done with a diode laser and its basic mechanism is the force of radiation pressure, which is generated by the processes of absorption and emission of photons, together with the action of a magnetic field and polarization of the beams. The system consists of three pairs of counterpropagating beams in the x, y and z directions with s+ and s polarizations, and a magnetic field that varies linearly in space. We were able to trap about 108 atoms with a charging time of approximately 2 sec. In parallel we performed degenerate four wave mixing measures in a Rb vapor atoms using a quasi-copropagating beams configuration. The signal generated in the nonlinear process was studied as a function of one of laser’s while keep the other with a fixed frequency; and it showed independent of which of the beams is being tuned. Simultaneous measurements of the transmission of the probe beam indicates that the nonlinear process occurs only in the cyclic transition and involves the group of atoms selected by the beam with fixed frequency.

Advisors/Committee Members: http://lattes.cnpq.br/8135767926752598, VIANNA, Sandra Sampaio.

Subjects/Keywords: Armadilha magneto-ótica. Mistura de quatro ondas. Ótica não linear. Espectroscopía atômica.; Magneto-optical trap. Four wave mixing. Nonlinear optics. Atomic spectroscopy.

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

ALVAREZ, A. S. (2016). Armadilha magneto ótica de rubídio e mistura de quatro ondas no vapor atômico. (Masters Thesis). Federal University of Pernambuco. Retrieved from https://repositorio.ufpe.br/handle/123456789/18556

Chicago Manual of Style (16^th Edition):

ALVAREZ, Ammis Sánchez. “Armadilha magneto ótica de rubídio e mistura de quatro ondas no vapor atômico.” 2016. Masters Thesis, Federal University of Pernambuco. Accessed April 10, 2021. https://repositorio.ufpe.br/handle/123456789/18556.

MLA Handbook (7^th Edition):

ALVAREZ, Ammis Sánchez. “Armadilha magneto ótica de rubídio e mistura de quatro ondas no vapor atômico.” 2016. Web. 10 Apr 2021.

Vancouver:

ALVAREZ AS. Armadilha magneto ótica de rubídio e mistura de quatro ondas no vapor atômico. [Internet] [Masters thesis]. Federal University of Pernambuco; 2016. [cited 2021 Apr 10]. Available from: https://repositorio.ufpe.br/handle/123456789/18556.

Council of Science Editors:

ALVAREZ AS. Armadilha magneto ótica de rubídio e mistura de quatro ondas no vapor atômico. [Masters Thesis]. Federal University of Pernambuco; 2016. Available from: https://repositorio.ufpe.br/handle/123456789/18556

Uppsala University

17. Huber, Jana. Plasmonic resonances in metallic nanoarrays.

Degree: Materials Physics, 2015, Uppsala University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262269

► The optical and magneto-optical response of plasmonic resonances in metallic nanoarrays out of square structures, either in holes or islands, were investigated. The excitation… (more)

Subjects/Keywords: Plasmon; magnetism; optics; magneto-plasmonics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Huber, J. (2015). Plasmonic resonances in metallic nanoarrays. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262269

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Huber, Jana. “Plasmonic resonances in metallic nanoarrays.” 2015. Thesis, Uppsala University. Accessed April 10, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262269.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Huber, Jana. “Plasmonic resonances in metallic nanoarrays.” 2015. Web. 10 Apr 2021.

Vancouver:

Huber J. Plasmonic resonances in metallic nanoarrays. [Internet] [Thesis]. Uppsala University; 2015. [cited 2021 Apr 10]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262269.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Huber J. Plasmonic resonances in metallic nanoarrays. [Thesis]. Uppsala University; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262269

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Victoria University of Wellington

18. Sutton, Rebecca Jane. Electrically and Optically Detected Electron Paramagnetic Resonance in Blue Organic Light Emitting Diodes.

Degree: 2013, Victoria University of Wellington

URL: http://hdl.handle.net/10063/2894

► Organic light emitting diodes (OLEDs) are an emerging technology based on electrically conducting polymer films, with great promise for large area lighting and flexible ultra-thin… (more)

▼ Organic light emitting diodes (OLEDs) are an emerging technology based on electrically conducting polymer films, with great promise for large area lighting and flexible ultra-thin displays. However, despite the rapid technological development, there is still a poor understanding of the degradation and spindependent recombination processes that take place inside an OLED. In this thesis, Electron Paramagnetic Resonance (EPR) was used to investigate these processes in blue-emitting OLEDs. A successful procedure was developed and refined for fabricating OLEDs with the structure ITO/PEDOT:PSS/emissive layer/Al/Ag, with and without the PEDOT:PSS hole-transporting layer. The organic emissive layer was either F8BT, PFO, or PVK:OXD-7:FIrpic (PB). These OLEDs were fabricated in air and with a geometry optimised for EPR experiments. Critical features for satisfactory devices were found to be a sufficiently thick organic layer and minimal exposure to the air. A compact apparatus was developed for simultaneous light output, current, and voltage measurements on the OLEDs while in an inert glove box environment. Electroluminescence and current-voltage parameters measured for these devices showed predominantly trap-controlled space-charge-limited conduction. OLEDs with PFO as the emissive layer and with a PEDOT:PSS layer were investigated with conventional, electrically-detected (ED) and optically-detected (OD) EPR techniques. EDEPR and ODEPR signals were observed at ~9.2 GHz and in the low (<50 mT) and high (~330 mT) magnetic field regimes and were found to change markedly with time during operation as the device degraded. The low field signals initially showed a composite broad quenching and superimposed narrow enhancing response centred around zero field strength. These signals were attributed to magneto-resistance (MR) and magneto-electroluminescence (MEL). Following operational ageing, a third, narrow quenching line was observed in the MR and the ratio of the initial two MR responses changed substantially. These effects are tentatively attributed to a hyperfine interaction. For both EDEPR and ODEPR, quenching high field resonances with a g-value (gyromagnetic ratio) of 2.003±0.001 were observed. The current-quenching resonance gradually diminished during operation and after 4–5 hours was replaced by a current-enhancing resonance. The appearance of this latter resonance could be explained by chemical changes in the OLED due to the diffusion of oxygen through the device from the oxygen-plasma-treated ITO. A working model is proposed which can explain this observed change as spindependent trapping and recombination at free radicals, although the model requires further experimentation to test its validity. Advisors/Committee Members: Edgar, Andy, Plank, Natalie.

Subjects/Keywords: Organic electronics; ESR; Magneto-optics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sutton, R. J. (2013). Electrically and Optically Detected Electron Paramagnetic Resonance in Blue Organic Light Emitting Diodes. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/2894

Chicago Manual of Style (16^th Edition):

Sutton, Rebecca Jane. “Electrically and Optically Detected Electron Paramagnetic Resonance in Blue Organic Light Emitting Diodes.” 2013. Masters Thesis, Victoria University of Wellington. Accessed April 10, 2021. http://hdl.handle.net/10063/2894.

MLA Handbook (7^th Edition):

Sutton, Rebecca Jane. “Electrically and Optically Detected Electron Paramagnetic Resonance in Blue Organic Light Emitting Diodes.” 2013. Web. 10 Apr 2021.

Vancouver:

Sutton RJ. Electrically and Optically Detected Electron Paramagnetic Resonance in Blue Organic Light Emitting Diodes. [Internet] [Masters thesis]. Victoria University of Wellington; 2013. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10063/2894.

Council of Science Editors:

Sutton RJ. Electrically and Optically Detected Electron Paramagnetic Resonance in Blue Organic Light Emitting Diodes. [Masters Thesis]. Victoria University of Wellington; 2013. Available from: http://hdl.handle.net/10063/2894

University of Waterloo

19. Lu, Wenhuan. Manipulation of Defect Formation in Semiconductor Nanocrystals for Photocatalysis and Magneto-optics.

Degree: 2020, University of Waterloo

URL: http://hdl.handle.net/10012/15971

► Defects play a significant role in semiconductor nanocrystals (NCs) as they can influence their electrical and optical properties via vacancy doping or aliovalent doping. Localized… (more)

▼ Defects play a significant role in semiconductor nanocrystals (NCs) as they can influence their electrical and optical properties via vacancy doping or aliovalent doping. Localized surface plasmon resonance (LSPR), the phenomenon of collective oscillation of free electrons, allows for degenerately doped metal oxide NCs to be used as infrared plasmonic materials with promising applications in photovoltaics, sensing, electrochemistry photocatalysis and magneto-optics. In this study, sub-stoichiometric WO3-x NCs were used for plasmon-induced photodegradation of rhodamine-590 (Rh-590), with the advantages of facile synthetic method and simple configuration, as well as the potential to efficiently absorb NIR to MIR portion of solar radiation relative to the typical single-phase semiconductor and heterostructured photocatalysts reported. WO3-x NCs exhibit enhanced photocatalytic activity in contrast to bulk stoichiometric WO3 and sub-stoichiometric WO2.9 powders as well as annealed WO3-x NCs with nearly complete Rh-590 degradation (97.8%) within 2 hours in the dark at 20 ℃. Photocatalytic performance of WO3-x NCs increases with temperature because the wavelength of the blackbody radiation approaches to LSPR peak maximum. The WO3-x NCs show good recyclability with degradation percentage of ca. 82.6% after 3 cycles at 30 ℃. Scavengers were used to study the mechanism of photocatalytic degradation by WO3-x, suggesting that reactive radicals (superoxide radicals and hydroxyl radicals) make significant contribution to Rh-590 photodegradation. The results of this work demonstrate the important role of LSPR-associated free electrons in single-phase plasmonic semiconductor NCs for efficient photodegradation of dyes. Additionally, the single-phase plasmonic semiconductor NCs have emerged as promising materials for carrier polarization as magneto-optical materials. ZnO NCs, as an environmentally benign, cost effective material with abundant availability and reduced toxicity, are proposed as a model system to systematically investigate the effect of defect formation on plasmonic properties and charge carrier polarization in the presence of an external magnetic field. The defect concentration, responsible for plasmonic properties, was manipulated via changing synthesis conditions and doping with Mg ions and evaluated with the help of photoluminescence (PL) spectroscopy. Importantly, the Curie-type decay associated with unpaired localized electrons can also be manipulated by controlling defect concentration as indicated by magnetic circular dichroism (MCD) spectra. The defect-correlated band splitting monitored by MCD spectroscopy in Mg-doped ZnO NCs would be an intriguing topic for further study. The ability to control exciton polarization in pure (undoped) ZnO NCs using individual electrons localized on point defects enable the potential technological applications including spintronics and quantum information processing.

Subjects/Keywords: plasmonics; photocatalysis; magneto-optics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lu, W. (2020). Manipulation of Defect Formation in Semiconductor Nanocrystals for Photocatalysis and Magneto-optics. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/15971

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lu, Wenhuan. “Manipulation of Defect Formation in Semiconductor Nanocrystals for Photocatalysis and Magneto-optics.” 2020. Thesis, University of Waterloo. Accessed April 10, 2021. http://hdl.handle.net/10012/15971.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lu, Wenhuan. “Manipulation of Defect Formation in Semiconductor Nanocrystals for Photocatalysis and Magneto-optics.” 2020. Web. 10 Apr 2021.

Vancouver:

Lu W. Manipulation of Defect Formation in Semiconductor Nanocrystals for Photocatalysis and Magneto-optics. [Internet] [Thesis]. University of Waterloo; 2020. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10012/15971.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lu W. Manipulation of Defect Formation in Semiconductor Nanocrystals for Photocatalysis and Magneto-optics. [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/15971

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

20. Sariyanni, Zoe-Elizabeth. Coherent effects in atomic and molecular media: applications to anthrax detection and quantum information.

Degree: PhD, Physics, 2006, Texas A&M University

URL: http://hdl.handle.net/1969.1/4242

► In the present quantum optics and laser physics study, the non-linear interaction of electromagnetic fields with atomic, molecular and biomolecular media is analyzed. Particular emphasis… (more)

Subjects/Keywords: Quantum Optics; Nonlinear Laser Physics; Coherent Effects; Quantum Information

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sariyanni, Z. (2006). Coherent effects in atomic and molecular media: applications to anthrax detection and quantum information. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/4242

Chicago Manual of Style (16^th Edition):

Sariyanni, Zoe-Elizabeth. “Coherent effects in atomic and molecular media: applications to anthrax detection and quantum information.” 2006. Doctoral Dissertation, Texas A&M University. Accessed April 10, 2021. http://hdl.handle.net/1969.1/4242.

MLA Handbook (7^th Edition):

Sariyanni, Zoe-Elizabeth. “Coherent effects in atomic and molecular media: applications to anthrax detection and quantum information.” 2006. Web. 10 Apr 2021.

Vancouver:

Sariyanni Z. Coherent effects in atomic and molecular media: applications to anthrax detection and quantum information. [Internet] [Doctoral dissertation]. Texas A&M University; 2006. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1969.1/4242.

Council of Science Editors:

Sariyanni Z. Coherent effects in atomic and molecular media: applications to anthrax detection and quantum information. [Doctoral Dissertation]. Texas A&M University; 2006. Available from: http://hdl.handle.net/1969.1/4242

21. Sternemann, Elmar. Ultrafast coherently controlled currents in GaAs: physics and applications.

Degree: 2015, Technische Universität Dortmund

URL: http://dx.doi.org/10.17877/DE290R-16381

► This thesis gives new insights into the physics and practical applications of coherently controlled current injection (QUIC) in the prototypical direct band gap semiconductor GaAs.… (more)

Subjects/Keywords: Nonlinear optics; Ultrafast laser spectroscopy; GaAs; Coherent control; Semiconductor microstructures; 530; Laserspektroskopie; Nichtlineare Optik; Halbleiter; Galliumarsenid

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sternemann, E. (2015). Ultrafast coherently controlled currents in GaAs: physics and applications. (Doctoral Dissertation). Technische Universität Dortmund. Retrieved from http://dx.doi.org/10.17877/DE290R-16381

Chicago Manual of Style (16^th Edition):

Sternemann, Elmar. “Ultrafast coherently controlled currents in GaAs: physics and applications.” 2015. Doctoral Dissertation, Technische Universität Dortmund. Accessed April 10, 2021. http://dx.doi.org/10.17877/DE290R-16381.

MLA Handbook (7^th Edition):

Sternemann, Elmar. “Ultrafast coherently controlled currents in GaAs: physics and applications.” 2015. Web. 10 Apr 2021.

Vancouver:

Sternemann E. Ultrafast coherently controlled currents in GaAs: physics and applications. [Internet] [Doctoral dissertation]. Technische Universität Dortmund; 2015. [cited 2021 Apr 10]. Available from: http://dx.doi.org/10.17877/DE290R-16381.

Council of Science Editors:

Sternemann E. Ultrafast coherently controlled currents in GaAs: physics and applications. [Doctoral Dissertation]. Technische Universität Dortmund; 2015. Available from: http://dx.doi.org/10.17877/DE290R-16381

Freie Universität Berlin

22. Patas, Alexander. Kontrolle multiphotonischer Prozesse mittels parametrisch geformter ultrakurzer Laserpulse.

Degree: 2017, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-9246

► Das Ziel dieser Arbeit besteht darin, Möglichkeiten der parametrischen Pulsformung, mit besonderem Blick auf die Multiphotonen-Fluoreszenzanregung und Filamentation, durch Laserpulse aufzuzeigen. Zudem werden Verfahren vorgestellt,… (more)

▼ Das Ziel dieser Arbeit besteht darin, Möglichkeiten der parametrischen Pulsformung, mit besonderem Blick auf die Multiphotonen-Fluoreszenzanregung und Filamentation, durch Laserpulse aufzuzeigen. Zudem werden Verfahren vorgestellt, die für die Anwendung von Pulsformung in medizinischer und biologischer Bildgebung von Vorteil sind. Hierfür wurden zunächst verschiedene parametrische Phasenfunktionen daraufhin untersucht, ob sie zwei Farbstoffe selektiv, nach Transmission durch eine Hohlkernfaser, zweiphotonisch anregen können. Dies bestätigt, dass geformte Laserpulse für selektive Anregung von Farbstoffen, z.b. in endoskopischen Anwendungen, verwendet werden können. Parametrische Phasenfunktionen werden vorgestellt, die eine Kontrolle der Multiphotonen-Anregung durch Veränderung nur eines Parameters ermöglichen. Simulationen wurden durchgeführt um die Grenzen der Kontrolle des Zweiphotonen-Prozesses aufzuzeigen. Dabei wurde deutlich, dass geformte Pulse, die größere Kontraste zwischen den Fluorsezenzfarbstoffen erreichen, immer mit einer reduzierten Fluoreszenz-Intensität einhergehen. Zusätzlich zu der Hohlkernfaser wurde eine neuartige Kagomé-Faser untersucht, welche besonders geeignet ist Pulse hoher Intensität ohne den störenden Einfluss von nichtlinearen Effekten zu leiten. Selbst polarisationsgeformte Pulse finden in solch einem Szenario Anwendung. Es wurde gezeigt, dass ein polarisationsgeformter Doppelpuls, nach Transmission durch eine Kagomé-Faser, verwendet werden kann um anistrop fluoreszierende Farbstoffe polarisationsabhängig anzuregen. Hierfür wurden zwei senkrechte phasengeformte Laserpulse erzeugt, die je für die Fluoreszenz eines Farbstoffes optimiert sind. Je nach Orientierung eines Polarisationsfilters ließ sich somit zwischen stärkerer Fluoreszenz des einen oder anderen Farbstoffes wählen. Weiterhin wurde die Kontrolle der Dreiphotonen-Anregung anhand von der Aminosäure LTryptophan in Wasser demonstriert. Auch dieser Prozess kann durch geformte Pulse beeinflusst werden, jedoch zeigt sich schnell, dass bei den hierfür benötigten Intensitäten nichtlineare Effekte einen signifikanten Einfluss auf die Entwicklung des Spektrums in der Küvette haben. Simulationen der Puls- Propagation in der Küvette, welche die Intensitätsentwicklung im Gauß-Fokus berücksichtigen, gaben Aufschluss auf die, hauptsächlich durch Selbstphasenmodulation bestimmten, spektralen Veränderungen. Das sich damit ebenfalls verändernde Dreiphotonen- Spektrum konnte durch Wahl der Pulsform so verändert werden, dass der Kontrast zwischen zwei Farbstoffen noch weiter verbessert werden kann. In einer dritten Reihe an Experimenten wurde untersucht inwieweit parametrisch geformte Pulse Einfluss auf das Weißlichtspektrum nach einem Filament haben. Pulse wurden mit einer neuartigen Methode zur Phasenbestimmung so vorkompensiert, dass sie zu Beginn des Filaments eine gewünschte Pulsform erreichten. Zweidimensionale, zylindrische Simulationen der Puls-Propagation unter Berücksichtigung von nichtlinearen Effekten, Dispersion, Plasma-Wechselwirkung… Advisors/Committee Members: m (gender), Prof. Dr. Ludger Wöste (firstReferee), Prof. Dr. Karsten Heyne (furtherReferee).

Subjects/Keywords: coherent control; laser pulse shaping; nonlinear optics; filamentation; ultrashort laser pulses; 500 Naturwissenschaften und Mathematik::530 Physik

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Patas, A. (2017). Kontrolle multiphotonischer Prozesse mittels parametrisch geformter ultrakurzer Laserpulse. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-9246

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Patas, Alexander. “Kontrolle multiphotonischer Prozesse mittels parametrisch geformter ultrakurzer Laserpulse.” 2017. Thesis, Freie Universität Berlin. Accessed April 10, 2021. http://dx.doi.org/10.17169/refubium-9246.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Patas, Alexander. “Kontrolle multiphotonischer Prozesse mittels parametrisch geformter ultrakurzer Laserpulse.” 2017. Web. 10 Apr 2021.

Vancouver:

Patas A. Kontrolle multiphotonischer Prozesse mittels parametrisch geformter ultrakurzer Laserpulse. [Internet] [Thesis]. Freie Universität Berlin; 2017. [cited 2021 Apr 10]. Available from: http://dx.doi.org/10.17169/refubium-9246.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Patas A. Kontrolle multiphotonischer Prozesse mittels parametrisch geformter ultrakurzer Laserpulse. [Thesis]. Freie Universität Berlin; 2017. Available from: http://dx.doi.org/10.17169/refubium-9246

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cornell University

23. Schrauth, Samuel. The Dependence On Initial Beam Conditions Of The Propagation Of Ultrashort Laser Pulses.

Degree: PhD, Applied Physics, 2015, Cornell University

URL: http://hdl.handle.net/1813/39423

► This thesis presents the nonlinear propagation dynamics in isotropic media. The influence of initial conditions on the propagation dynamics is considered. Three different instances are… (more)

Subjects/Keywords: Nonlinear Optics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Schrauth, S. (2015). The Dependence On Initial Beam Conditions Of The Propagation Of Ultrashort Laser Pulses. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/39423

Chicago Manual of Style (16^th Edition):

Schrauth, Samuel. “The Dependence On Initial Beam Conditions Of The Propagation Of Ultrashort Laser Pulses.” 2015. Doctoral Dissertation, Cornell University. Accessed April 10, 2021. http://hdl.handle.net/1813/39423.

MLA Handbook (7^th Edition):

Schrauth, Samuel. “The Dependence On Initial Beam Conditions Of The Propagation Of Ultrashort Laser Pulses.” 2015. Web. 10 Apr 2021.

Vancouver:

Schrauth S. The Dependence On Initial Beam Conditions Of The Propagation Of Ultrashort Laser Pulses. [Internet] [Doctoral dissertation]. Cornell University; 2015. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1813/39423.

Council of Science Editors:

Schrauth S. The Dependence On Initial Beam Conditions Of The Propagation Of Ultrashort Laser Pulses. [Doctoral Dissertation]. Cornell University; 2015. Available from: http://hdl.handle.net/1813/39423

University of Minnesota

24. Block, Andrew. Functional Oxide Depositions on Dielectric Substrates for Optical Applications.

Degree: PhD, Electrical Engineering, 2015, University of Minnesota

URL: http://hdl.handle.net/11299/177064

► Complex oxides of the transition metals are essential materials in the fabrication of photonic devices due to their high transparency in the infrared and the… (more)

Subjects/Keywords: Electro-Optics; Garnets; Magneto-Optics; Oxides; Perovskites

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Block, A. (2015). Functional Oxide Depositions on Dielectric Substrates for Optical Applications. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/177064

Chicago Manual of Style (16^th Edition):

Block, Andrew. “Functional Oxide Depositions on Dielectric Substrates for Optical Applications.” 2015. Doctoral Dissertation, University of Minnesota. Accessed April 10, 2021. http://hdl.handle.net/11299/177064.

MLA Handbook (7^th Edition):

Block, Andrew. “Functional Oxide Depositions on Dielectric Substrates for Optical Applications.” 2015. Web. 10 Apr 2021.

Vancouver:

Block A. Functional Oxide Depositions on Dielectric Substrates for Optical Applications. [Internet] [Doctoral dissertation]. University of Minnesota; 2015. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/11299/177064.

Council of Science Editors:

Block A. Functional Oxide Depositions on Dielectric Substrates for Optical Applications. [Doctoral Dissertation]. University of Minnesota; 2015. Available from: http://hdl.handle.net/11299/177064

25. Hage, Charles-Henri. Sources optiques fibrées pour applications biomédicales : Fiber-based light source for biomedical applications.

Degree: Docteur es, Physique, 2013, Université de Bourgogne

URL: http://www.theses.fr/2013DIJOS001

►

Ce mémoire présente les travaux effectués sur le développement d'une source optique servant à des applications d'imagerie biomédicale en général et de diffusion Raman cohérente… (more)

▼

Ce mémoire présente les travaux effectués sur le développement d'une source optique servant à des applications d'imagerie biomédicale en général et de diffusion Raman cohérente en particulier. En effet la diffusion de ces dernières est freinée par le verrou technologique que constitue la nécessité de deux impulsions synchronisées et décalées en longueur d’onde. La praticité et les possibilités de conversions de fréquences offertes par l’optique non-linéaire fibrée sont ainsi utilisées pour adresser ce verrou technologique. Tout d’abord, une source simplement réglable en longueur d’onde est générée par l’effet d’auto-décalage en fréquence optique d'un soliton par effet Raman. Une étude des principaux paramètres de fibre aboutit à des décalages de 320 à plus de 500 nm, permettant une imagerie des résonances d’intérêt (≈ 1000-4000 cm-1). Deux applications de ce décalage sont présentées. Ensuite, l’autre impulsion voit sa largeur spectrale réduite de 70 à 10 cm-1 par compression spectrale, qui consiste en un "regroupement non-linéaire de fréquences sans pertes", afin de bénéficier de la résolution spectrale nécessaire. Enfin, la source développée est validée par l’acquisition de spectres CARS de différents échantillons de référence, pour différentes résonances (850 à 1750 cm-1). Une extension de la source à d'autres types d'imagerie est proposée, ainsi qu'une architecture de source quasiment entièrement fibrée exploitant les principes développés au cours de cette thèse

This manuscript presents the work done concerning the development of a light source used for biomedical imaging and more particularly for coherent Raman scattering imaging. In fact an efficient broadcasting of these ones is hampered by the need of two synchronized and wavelength shifted pulses. As so, the handiness and frequency conversion capabilities of nonlinear fiber optics are used to circumvent this technological lock. First of all, an easy wavelength tunable source is set by the use of the self-shifting in optical frequency of a soliton. A study of the main fiber parameters lead to shifts of 320 to more than 500 nm which allows interesting molecular resonances imaging (≈ 1000-4000 cm-1). Two applications of this shift are also reported. Then, the second pulse sees its spectral width reduced from 70 to 10 cm-1 by spectral compression, which consists in a "loss-less frequency regrouping", in order to obtain a proper spectral resolution. Finally, the developed source is validated by acquiring CARS spectra of different reference solvents and for different resonances (850 to 1750 cm-1). An evolution of this source to allow other imaging techniques is proposed, as well as a quasi-all-fibered source exploiting the principles addressed during this thesis work

Advisors/Committee Members: Millot, Guy (thesis director), Finot, Christophe (thesis director), Kibler, Bertrand (thesis director).

Subjects/Keywords: Imagerie multimodale; Diffusion Raman cohérente; Optique non-linéaire; Optique fibrée; Fibre microstructurée; Multimodal imaging; Coherent Raman Scattering; Nonlinear optics; Fiber optics; Microstructured fiber; 610.2; 621.36

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hage, C. (2013). Sources optiques fibrées pour applications biomédicales : Fiber-based light source for biomedical applications. (Doctoral Dissertation). Université de Bourgogne. Retrieved from http://www.theses.fr/2013DIJOS001

Chicago Manual of Style (16^th Edition):

Hage, Charles-Henri. “Sources optiques fibrées pour applications biomédicales : Fiber-based light source for biomedical applications.” 2013. Doctoral Dissertation, Université de Bourgogne. Accessed April 10, 2021. http://www.theses.fr/2013DIJOS001.

MLA Handbook (7^th Edition):

Hage, Charles-Henri. “Sources optiques fibrées pour applications biomédicales : Fiber-based light source for biomedical applications.” 2013. Web. 10 Apr 2021.

Vancouver:

Hage C. Sources optiques fibrées pour applications biomédicales : Fiber-based light source for biomedical applications. [Internet] [Doctoral dissertation]. Université de Bourgogne; 2013. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2013DIJOS001.

Council of Science Editors:

Hage C. Sources optiques fibrées pour applications biomédicales : Fiber-based light source for biomedical applications. [Doctoral Dissertation]. Université de Bourgogne; 2013. Available from: http://www.theses.fr/2013DIJOS001

26. Neveu, Pascal. Propagation de lumière dans l'hélium métastable : stockage, amplification, fluctuations et bruit quantique. : Propagation of light in metastable helium : storage, amplification, fluctuations and quantum noise.

Degree: Docteur es, Physique quantique, 2019, Université Paris-Saclay (ComUE)

URL: http://www.theses.fr/2019SACLN044

►

Un état quantique de lumière est caractérisé par la statistique de son nombre de photons. Lorsque qu'un champ électromagnétique se propage dans un milieu, ses… (more)

▼

Un état quantique de lumière est caractérisé par la statistique de son nombre de photons. Lorsque qu'un champ électromagnétique se propage dans un milieu, ses statistiques peuvent être modifiées, notamment en présence de phénomènes cohérents. Cette thèse s'intéresse expérimentalement et théoriquement à la propagation d'états quantiques de lumière dans une vapeur d'hélium métastable à température ambiante. Dans un premier temps, on étudie la propagation de lumière en présence d'oscillations cohérentes de populations ultrafines et montre qu'elles permettent de stocker efficacement une quadrature spécifique d'un champ lumineux. Néanmoins, ce protocole ne permet pas de stocker les deux quadratures d'un mode du champ électromagnétique, et les conditions de propagation dans le milieu dégradent leurs propriétés statistiques, empêchant son utilisation pour des applications quantiques. Ce travail montre ensuite qu'il est possible de générer des états comprimés à deux modes dans ce même système, par mélange à 4 ondes. Les états fortement comprimés (9 dB) peuvent être générés en exploitant les fortes non-linéarités induites par piégeage cohérent de population via une transition optique, ainsi que par la proximité d'une autre transition optique voisine. Enfin, une dernière partie s'intéresse au transfert de bruit par effet Faraday entre les fluctuations de spin atomique du milieu et les fluctuations de polarisation d'un champ lumineux. L'étude de ces fluctuations par spectroscopie de bruit de spin a mis en évidence des comportements originaux qui pourraient par la suite être utilisés dans d'autres milieux.

A quantum state of light is characterized by its statistics of number of photons. These statistics can change in the presence of coherent phenomena. This PhD focuses both experimentally and theoretically on the propagation of quantum states within a room temperature vapor of metastable helium. First, we show that ultranarrow coherent population oscillations allow to efficiently store a specific quadrature of a light wave. Nevertheless, this protocol cannot be use to store the two quadratures of a light field. Indeed, the propagation conditions deteriorates its statistical properties, forbidding its use for quantum application. Secondly, we show that it is possible to generate twomode squeezed states of light in that system. High amplification can be achieved (9 dB), exploiting the strong nonlinearities enabled by coherent population trapping of a transition, and because of the energy level structure. Finally, we study atomic spin noise transfer to light polarization noise via Faraday effect. These fluctuations, probed by spin noise spectroscopy, show original behaviors that may be useful in another systems.

Advisors/Committee Members: Goldfarb, Fabienne (thesis director).

Subjects/Keywords: Optique quantique; Optique non-Linéaire; Mémoire optique; Physique atomique; Processus cohérents; Spectroscopie de bruit de spin; Quantum optics; Nonlinear optics; Optical memory; Atomic physics; Coherent processes; Spin noise spectroscopy

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Neveu, P. (2019). Propagation de lumière dans l'hélium métastable : stockage, amplification, fluctuations et bruit quantique. : Propagation of light in metastable helium : storage, amplification, fluctuations and quantum noise. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2019SACLN044

Chicago Manual of Style (16^th Edition):

Neveu, Pascal. “Propagation de lumière dans l'hélium métastable : stockage, amplification, fluctuations et bruit quantique. : Propagation of light in metastable helium : storage, amplification, fluctuations and quantum noise.” 2019. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed April 10, 2021. http://www.theses.fr/2019SACLN044.

MLA Handbook (7^th Edition):

Neveu, Pascal. “Propagation de lumière dans l'hélium métastable : stockage, amplification, fluctuations et bruit quantique. : Propagation of light in metastable helium : storage, amplification, fluctuations and quantum noise.” 2019. Web. 10 Apr 2021.

Vancouver:

Neveu P. Propagation de lumière dans l'hélium métastable : stockage, amplification, fluctuations et bruit quantique. : Propagation of light in metastable helium : storage, amplification, fluctuations and quantum noise. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2019. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2019SACLN044.

Council of Science Editors:

Neveu P. Propagation de lumière dans l'hélium métastable : stockage, amplification, fluctuations et bruit quantique. : Propagation of light in metastable helium : storage, amplification, fluctuations and quantum noise. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2019. Available from: http://www.theses.fr/2019SACLN044

27. Jenneve, Philippe. Analyse Expérimentale des Distorsions Non-Linéaires pour la Construction d’un Estimateur de Performances des Réseaux Optiques Cohérents : Experimental Nonlinear Distorsion Analysis for the Design of Performance Estimator in Coherent Optical Networks.

Degree: Docteur es, Physique, 2016, Université Paris-Saclay (ComUE)

URL: http://www.theses.fr/2016SACLO014

►

Les réseaux optiques à très haut-débit sont à la base des technologies de l’information d’aujourd’hui et le sujet d’intenses recherches. Alors que l’innovation permet de… (more)

▼

Les réseaux optiques à très haut-débit sont à la base des technologies de l’information d’aujourd’hui et le sujet d’intenses recherches. Alors que l’innovation permet de rendre les transpondeurs flexibles et versatiles, les réseaux de transmission par fibres optiques sont encore configurés manuellement et surtout rarement modifiés au cours de la vie du réseau. Un des points bloquants pour aller vers la reconfiguration et l’automatisation des réseaux optiques est le besoin de prédiction de la performance de tous les liens du réseau de façon précise et rapide. Cependant, la prédiction est rendue plus complexe par la diversité du type de fibres optiques déployées et les régimes de propagation utilisés.Au cours de mes travaux, j’ai étudié expérimentalement les distorsions du signal provenant des effets non-linéaires de type Kerr, accumulées sur des centaines de kilomètres de fibres optiques. Au travers d’expériences spécifiques et contrôlées, j’ai mesuré et mis en évidence les propriétés fondamentales des distorsions non-linéaires. Ces analyses m’ont permis de concevoir l’estimateur d’un modèle de performance destiné à des liens optiques hétérogènes, qui s’applique pour différents types de fibre et différents régimes de propagation.La flexibilité des transpondeurs associés à un estimateur de performance permettront de concevoir, d’optimiser et d’adapter de façon dynamique les canaux en fonction de la demande et de la topologie du réseau, ainsi que de calculer la protection et la restauration des chemins.

Nowadays, high-speed fiber-optic communication networks are the basis of information technology and the subject of intense research. Innovation enables transponders to be flexible and versatile, but fiber optical networks are still configured manually and especially almost never tuned during the life of the network. One of the blocking points toward reconfigurable and automated optical networks is the need of performance prediction for any link of the network in an accurate and fast way. However, the prediction is made even more complex by the diversity of deployed optical fiber types and propagation regimes.During my work, I addressed experimentally the signal distortions coming from nonlinear Kerr effects accumulated on hundreds of kilometers of optical fibers. Based on specific and controlled experiments, I have measured and highlighted the properties of the nonlinear distortions. These analyses allowed me to design a performance model estimator that can be applied to heterogeneous optical links with various optical fiber types and propagation regimes.The flexibility of transponders associated with a performance estimator will optimize and tune the channels dynamically depending on the load and the topology of the network, as well as compute the protection and restoration links.

Advisors/Committee Members: Dubreuil, Nicolas (thesis director).

Subjects/Keywords: Fibres optiques; Optique non-Linéaire; Effet Kerr; Dispersion chromatique; Communication cohérente; Réseaux; Fiber optics; Nonlinear optics; Kerr effet; Chromatic dispersion; Coherent communications; Networks; 535.3; 535.4

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jenneve, P. (2016). Analyse Expérimentale des Distorsions Non-Linéaires pour la Construction d’un Estimateur de Performances des Réseaux Optiques Cohérents : Experimental Nonlinear Distorsion Analysis for the Design of Performance Estimator in Coherent Optical Networks. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2016SACLO014

Chicago Manual of Style (16^th Edition):

Jenneve, Philippe. “Analyse Expérimentale des Distorsions Non-Linéaires pour la Construction d’un Estimateur de Performances des Réseaux Optiques Cohérents : Experimental Nonlinear Distorsion Analysis for the Design of Performance Estimator in Coherent Optical Networks.” 2016. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed April 10, 2021. http://www.theses.fr/2016SACLO014.

MLA Handbook (7^th Edition):

Jenneve, Philippe. “Analyse Expérimentale des Distorsions Non-Linéaires pour la Construction d’un Estimateur de Performances des Réseaux Optiques Cohérents : Experimental Nonlinear Distorsion Analysis for the Design of Performance Estimator in Coherent Optical Networks.” 2016. Web. 10 Apr 2021.

Vancouver:

Jenneve P. Analyse Expérimentale des Distorsions Non-Linéaires pour la Construction d’un Estimateur de Performances des Réseaux Optiques Cohérents : Experimental Nonlinear Distorsion Analysis for the Design of Performance Estimator in Coherent Optical Networks. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2016. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2016SACLO014.

Council of Science Editors:

Jenneve P. Analyse Expérimentale des Distorsions Non-Linéaires pour la Construction d’un Estimateur de Performances des Réseaux Optiques Cohérents : Experimental Nonlinear Distorsion Analysis for the Design of Performance Estimator in Coherent Optical Networks. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2016. Available from: http://www.theses.fr/2016SACLO014

Texas A&M University

28. Chen, Qi. Arsenic Trisulfide on Lithium Niobate Waveguides for Nonlinear Infrared Optics.

Degree: PhD, Electrical Engineering, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/153348

► Arsenic trisulfide (As_(2)S_(3)) waveguides on lithium niobate (LiNbO_(3)) substrate have a wide variety of applications in both near-infrared (near-IR) and mid-infrared (mid-IR). As an amorphous… (more)

Subjects/Keywords: Nonlinear Optics Integrated Optics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chen, Q. (2014). Arsenic Trisulfide on Lithium Niobate Waveguides for Nonlinear Infrared Optics. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/153348

Chicago Manual of Style (16^th Edition):

Chen, Qi. “Arsenic Trisulfide on Lithium Niobate Waveguides for Nonlinear Infrared Optics.” 2014. Doctoral Dissertation, Texas A&M University. Accessed April 10, 2021. http://hdl.handle.net/1969.1/153348.

MLA Handbook (7^th Edition):

Chen, Qi. “Arsenic Trisulfide on Lithium Niobate Waveguides for Nonlinear Infrared Optics.” 2014. Web. 10 Apr 2021.

Vancouver:

Chen Q. Arsenic Trisulfide on Lithium Niobate Waveguides for Nonlinear Infrared Optics. [Internet] [Doctoral dissertation]. Texas A&M University; 2014. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1969.1/153348.

Council of Science Editors:

Chen Q. Arsenic Trisulfide on Lithium Niobate Waveguides for Nonlinear Infrared Optics. [Doctoral Dissertation]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/153348

Queens University

29. Pegoraro, Adrian Frank. Developing Single-Laser Sources for Multimodal Coherent Anti-Stokes Raman Scattering Microscopy .

Degree: Physics, Engineering Physics and Astronomy, 2011, Queens University

URL: http://hdl.handle.net/1974/6639

► Coherent anti-Stokes Raman scattering (CARS) microscopy has developed rapidly and is opening the door to new types of experiments. This work describes the development of… (more)

▼ Coherent anti-Stokes Raman scattering (CARS) microscopy has developed rapidly and is opening the door to new types of experiments. This work describes the development of new laser sources for CARS microscopy and their use for different applications. It is specifically focused on multimodal nonlinear optical microscopy—the simultaneous combination of different imaging techniques. This allows us to address a diverse range of applications, such as the study of biomaterials, fluid inclusions, atherosclerosis, hepatitis C infection in cells, and ice formation in cells. For these applications new laser sources are developed that allow for practical multimodal imaging. For example, it is shown that using a single Ti:sapphire oscillator with a photonic crystal fiber, it is possible to develop a versatile multimodal imaging system using optimally chirped laser pulses. This system can perform simultaneous two photon excited fluorescence, second harmonic generation, and CARS microscopy. The versatility of the system is further demonstrated by showing that it is possible to probe different Raman modes using CARS microscopy simply by changing a time delay between the excitation beams. Using optimally chirped pulses also enables further simplification of the laser system required by using a single fiber laser combined with nonlinear optical fibers to perform effective multimodal imaging. While these sources are useful for practical multimodal imaging, it is believed that for further improvements in CARS microscopy sensitivity, new excitation schemes are necessary. This has led to the design of a new, high power, extended cavity oscillator that should be capable of implementing new excitation schemes for CARS microscopy as well as other techniques. Our interest in multimodal imaging has led us to other areas of research as well. For example, a fiber-coupling scheme for signal collection in the forward direction is demonstrated that allows for fluorescence lifetime imaging without significant temporal distortion. Also highlighted is an imaging artifact that is unique to CARS microscopy that can alter image interpretation, especially when using multimodal imaging. By combining expertise in nonlinear optics, laser development, fiber optics, and microscopy, we have developed systems and techniques that will be of benefit for multimodal CARS microscopy.

Subjects/Keywords: CARS Microscopy ; Nonlinear Optics ; Optics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pegoraro, A. F. (2011). Developing Single-Laser Sources for Multimodal Coherent Anti-Stokes Raman Scattering Microscopy . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/6639

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pegoraro, Adrian Frank. “Developing Single-Laser Sources for Multimodal Coherent Anti-Stokes Raman Scattering Microscopy .” 2011. Thesis, Queens University. Accessed April 10, 2021. http://hdl.handle.net/1974/6639.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pegoraro, Adrian Frank. “Developing Single-Laser Sources for Multimodal Coherent Anti-Stokes Raman Scattering Microscopy .” 2011. Web. 10 Apr 2021.

Vancouver:

Pegoraro AF. Developing Single-Laser Sources for Multimodal Coherent Anti-Stokes Raman Scattering Microscopy . [Internet] [Thesis]. Queens University; 2011. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1974/6639.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pegoraro AF. Developing Single-Laser Sources for Multimodal Coherent Anti-Stokes Raman Scattering Microscopy . [Thesis]. Queens University; 2011. Available from: http://hdl.handle.net/1974/6639

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

30. Hays, Alan. Technique for Reducing Laser Beam Divergence of Intra-Cavity Nonlinear Conversion.

Degree: D.Engr., Electrical Engineering and Computer Science, 2014, The Catholic University of America

URL: http://hdl.handle.net/1961/etd:259

►

Degree awarded: D.Engr. Electrical Engineering and Computer Science. The Catholic University of America

During the past few years the Monoblock laser has become the laser-of-choice… (more)

Subjects/Keywords: Optics; laser; nonlinear optics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hays, A. (2014). Technique for Reducing Laser Beam Divergence of Intra-Cavity Nonlinear Conversion. (Doctoral Dissertation). The Catholic University of America. Retrieved from http://hdl.handle.net/1961/etd:259

Chicago Manual of Style (16^th Edition):

Hays, Alan. “Technique for Reducing Laser Beam Divergence of Intra-Cavity Nonlinear Conversion.” 2014. Doctoral Dissertation, The Catholic University of America. Accessed April 10, 2021. http://hdl.handle.net/1961/etd:259.

MLA Handbook (7^th Edition):

Hays, Alan. “Technique for Reducing Laser Beam Divergence of Intra-Cavity Nonlinear Conversion.” 2014. Web. 10 Apr 2021.

Vancouver:

Hays A. Technique for Reducing Laser Beam Divergence of Intra-Cavity Nonlinear Conversion. [Internet] [Doctoral dissertation]. The Catholic University of America; 2014. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1961/etd:259.

Council of Science Editors:

Hays A. Technique for Reducing Laser Beam Divergence of Intra-Cavity Nonlinear Conversion. [Doctoral Dissertation]. The Catholic University of America; 2014. Available from: http://hdl.handle.net/1961/etd:259

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations