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You searched for subject:(Magneto optic Sensing). Showing records 1 – 3 of 3 total matches.

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University of Colorado

1. Barry, Ian Forest. Application of the Na-DEMOF Atomic Filter to 3-Frequency Na Doppler Lidar Observations of Wind and Temperature in the Lower Atmosphere.

Degree: MA, Aerospace Engineering Sciences, 2015, University of Colorado

Lidar systems comprise one of several indispensable tools for derivation of wind, density, and temperature profiles in the atmosphere. 3-frequency resonance-fluorescence lidars are particularly useful for high-resolution profiles of all three quantities derived simultaneously. However, these lidars depend on atomic species restricted to the metal layers in the middle and upper atmosphere as frequency discriminators, and are not optimized for derivation of these quantities in the lower atmosphere. Rayleigh Doppler lidars typically applied to this region face other restrictions, such as dependence on high-power transmitted lasers, lack of absolute frequency references, and inabilities to derive multiple atmospheric quantities simultaneously without expensive additional transmitter and receiver channels. A proposed solution to these difficulties is the sodium double-edge magneto-optic filter, (Na-DEMOF), which provides a frequency discriminator for the Rayleigh signal returned by the lower atmosphere and allows 3-frequency Na Doppler lidars to derive atmospheric quantity profiles within the lower atmosphere as well as within the mesospheric and lower thermospheric (MLT) metal layers. This thesis describes the design, benefits, and restrictions of Na-DEMOFs, and uses the application methods and most recent results of the Na-DEMOFs constructed and tested by the Chu lidar group to demonstrate their successful application to simultaneous derivation of meridional and zonal winds along with temperature. Advisors/Committee Members: Xinzhao Chu, Wentao Huang, Zoltan Sternovsky.

Subjects/Keywords: atmospheric Doppler lidars; atomic filter; magneto-optic filter; meridional winds; temperature; zonal winds; Atmospheric Sciences; Remote Sensing; Systems Engineering and Multidisciplinary Design Optimization

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

APA (6th Edition):

Barry, I. F. (2015). Application of the Na-DEMOF Atomic Filter to 3-Frequency Na Doppler Lidar Observations of Wind and Temperature in the Lower Atmosphere. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/asen_gradetds/126

Chicago Manual of Style (16th Edition):

Barry, Ian Forest. “Application of the Na-DEMOF Atomic Filter to 3-Frequency Na Doppler Lidar Observations of Wind and Temperature in the Lower Atmosphere.” 2015. Masters Thesis, University of Colorado. Accessed March 02, 2021. https://scholar.colorado.edu/asen_gradetds/126.

MLA Handbook (7th Edition):

Barry, Ian Forest. “Application of the Na-DEMOF Atomic Filter to 3-Frequency Na Doppler Lidar Observations of Wind and Temperature in the Lower Atmosphere.” 2015. Web. 02 Mar 2021.

Vancouver:

Barry IF. Application of the Na-DEMOF Atomic Filter to 3-Frequency Na Doppler Lidar Observations of Wind and Temperature in the Lower Atmosphere. [Internet] [Masters thesis]. University of Colorado; 2015. [cited 2021 Mar 02]. Available from: https://scholar.colorado.edu/asen_gradetds/126.

Council of Science Editors:

Barry IF. Application of the Na-DEMOF Atomic Filter to 3-Frequency Na Doppler Lidar Observations of Wind and Temperature in the Lower Atmosphere. [Masters Thesis]. University of Colorado; 2015. Available from: https://scholar.colorado.edu/asen_gradetds/126


University of Michigan

2. Chen, Chia-Chu. Multi-birefringence effects in the diluted magnetic semiconductor cadmium manganese telluride: Applications from microwave to terahertz.

Degree: PhD, Pure Sciences, 2010, University of Michigan

Nondestructive evaluation is commonly used in science and industry to evaluate the properties of a material, component or system without causing damage. In this thesis, optical nondestructive evaluation tools are developed using a diluted magnetic semiconductor, CMT. A single <110> CMT crystal probe is employed as a sensor in both the microwave and THz electromagnetic wave region. Both theory and experimental results demonstrate that a diluted-magnetic-semiconductor CMT crystal exhibits both Faraday rotation and electric-field-induced linear birefringence. Utilizing this characteristic, a single probe that is capable of sensing both electric and magnetic fields independently is presented here. In addition, the linear electro-optic coefficient, r41 for CMT has been calculated from electric-field measurements to be 3.5 +/- 0.2 pm/V. The ability to measure the electric or magnetic field components is exploited to develop a Poynting vector sensor that requires no further transformational calculation or physical information about the device. Maps of the microwave Poynting vector along a 50-O microstrip with different terminations were experimentally determined. An open termination microstrip shows no energy flow, whereas a matched-load microstrip shows consistent energy flow along the microstrip transmission line. These results demonstrate that the Poynting vector can be extracted from the components of the electric and magnetic field by utilizing a single <110> CMT crystal. CMT is also employed as an EO sensing crystal in a THz time-domain reflectometry system that is used to detect both surface and subsurface defects of thermal barrier coatings. A 50 mum surface defect of a thermal barrier coating is identified even though its width is beyond the diffraction limit associated with a 1-THz frequency component. Moreover, when a history of pulsed reflectometry measurements is maintained, this THz system can also monitor the evolution of thermally-induced oxide layers and voids – embedded at a ceramic/metal interface – that are on the order of a single micrometer in thickness. This was accomplished through the observation of THz pulse time delays and changes in the width and shape of the THz pulses. These features can be used to predict the lifetime of thermal-barrier coatings and to indicate a warning of imminent spallation conditions. Advisors/Committee Members: Whittaker, John F. (advisor).

Subjects/Keywords: Applications; Birefringence; Cadmium Manganese Telluride; Diluted; Effects; Electro-optic Sensing; Magnetic Semiconductor; Magneto-optic Sensing; Microwave; Multi; Terahertz

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

APA (6th Edition):

Chen, C. (2010). Multi-birefringence effects in the diluted magnetic semiconductor cadmium manganese telluride: Applications from microwave to terahertz. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/127156

Chicago Manual of Style (16th Edition):

Chen, Chia-Chu. “Multi-birefringence effects in the diluted magnetic semiconductor cadmium manganese telluride: Applications from microwave to terahertz.” 2010. Doctoral Dissertation, University of Michigan. Accessed March 02, 2021. http://hdl.handle.net/2027.42/127156.

MLA Handbook (7th Edition):

Chen, Chia-Chu. “Multi-birefringence effects in the diluted magnetic semiconductor cadmium manganese telluride: Applications from microwave to terahertz.” 2010. Web. 02 Mar 2021.

Vancouver:

Chen C. Multi-birefringence effects in the diluted magnetic semiconductor cadmium manganese telluride: Applications from microwave to terahertz. [Internet] [Doctoral dissertation]. University of Michigan; 2010. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/2027.42/127156.

Council of Science Editors:

Chen C. Multi-birefringence effects in the diluted magnetic semiconductor cadmium manganese telluride: Applications from microwave to terahertz. [Doctoral Dissertation]. University of Michigan; 2010. Available from: http://hdl.handle.net/2027.42/127156

3. HERREÑO FIERRO, CESAR AURELIO. Magnetoplasmónica de estructuras multicapa Au|Co|Au .

Degree: 2016, Universidad de los Andes

En esta tesis se estudia la relación entre las propiedades magneto-ópticas (MO) y plasmónicas de estructuras tricapa de oro y cobalto Au|Co|Au. Este tipo de estructuras, denominadas magnetoplasmónicas, exhibe funcionalidades MO y plasmónicas intervinculadas que han despertado un gran interés en la investigación científica reciente, así como en la investigación dirigida al desarrollo de aplicaciones prácticas como la plasmónica activa y los biosensores. Los resultados generales, además de contribuir a la comprensión de la relación entre dichas funcionalidades, también significan un aporte para el desarrollo y mejoramiento de las aplicaciones mencionadas. Advisors/Committee Members: Patiño Zapata Edgar Javier (advisor).

Subjects/Keywords: Magnetoplasmónica; plasmones superficiales; efecto magneto-óptico Kerr; películas delgadas; nanopartículas; litografía coloidal; detección SPR; elipsometría; magnetoplasmonics; surface plasmon; magneto-optic Kerr efect; thin films; nanoparticles; colloidal lithography; SPR sensing; ellipsometry.

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

APA (6th Edition):

HERREÑO FIERRO, C. A. (2016). Magnetoplasmónica de estructuras multicapa Au|Co|Au . (Thesis). Universidad de los Andes. Retrieved from https://documentodegrado.uniandes.edu.co/documentos/8965.pdf

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

Chicago Manual of Style (16th Edition):

HERREÑO FIERRO, CESAR AURELIO. “Magnetoplasmónica de estructuras multicapa Au|Co|Au .” 2016. Thesis, Universidad de los Andes. Accessed March 02, 2021. https://documentodegrado.uniandes.edu.co/documentos/8965.pdf.

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

MLA Handbook (7th Edition):

HERREÑO FIERRO, CESAR AURELIO. “Magnetoplasmónica de estructuras multicapa Au|Co|Au .” 2016. Web. 02 Mar 2021.

Vancouver:

HERREÑO FIERRO CA. Magnetoplasmónica de estructuras multicapa Au|Co|Au . [Internet] [Thesis]. Universidad de los Andes; 2016. [cited 2021 Mar 02]. Available from: https://documentodegrado.uniandes.edu.co/documentos/8965.pdf.

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

Council of Science Editors:

HERREÑO FIERRO CA. Magnetoplasmónica de estructuras multicapa Au|Co|Au . [Thesis]. Universidad de los Andes; 2016. Available from: https://documentodegrado.uniandes.edu.co/documentos/8965.pdf

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

.