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You searched for +publisher:"NSYSU" +contributor:("Jian-Jang Huang"). Showing records 1 – 3 of 3 total matches.

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NSYSU

1. Tsui, Po-Ting. Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures.

Degree: Master, Electro-Optical Engineering, 2010, NSYSU

In this work, we studied the optical characteristics of the coupled double DBR structure. We use the conventional transfer matrix simulation to find the intermediate multilayer periods (NC), and control the position of the transmission peak and stop band. Sample is grown by solid source molecular beam epitaxy (MBE) on n+GaAs (001) substrate, and the InGaAs QDs (quantum dots) are grown in the coupled cavity structure. The 23 periods of DBR multilayer, GaAs (91.8 nm) / AlAs (108.1 nm), obtain 99.5% reflectivity in the 1260 nm wavelength by the simulation. After the simulation from the conventional transfer matrix method, we choose NC = 13.5, the position of the transmission peak are at 1177 and 1188 nm, and optical frequency difference = 2.27 THz (Î=11 nm) in this study.From PL spectra, we observed interference between the enhanced light fields of the two cavity modes and the agreement between measurement and simulation. This structure is potential to be a compact terahertz emission device or vertical cavity surface emitting laser in room temperature. Advisors/Committee Members: Tsong-Sheng Lay (committee member), Jian-Jang Huang (chair), Yi-Jen Chiu (chair), Chien-Chung Lin (chair), Chin-Ping Yu (chair).

Subjects/Keywords: coupled cavity; DBR; quantum dot

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

APA (6th Edition):

Tsui, P. (2010). Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728110-114433

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):

Tsui, Po-Ting. “Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures.” 2010. Thesis, NSYSU. Accessed December 08, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728110-114433.

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

MLA Handbook (7th Edition):

Tsui, Po-Ting. “Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures.” 2010. Web. 08 Dec 2019.

Vancouver:

Tsui P. Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures. [Internet] [Thesis]. NSYSU; 2010. [cited 2019 Dec 08]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728110-114433.

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

Council of Science Editors:

Tsui P. Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures. [Thesis]. NSYSU; 2010. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728110-114433

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


NSYSU

2. Liu, Chun-Nien. The Fabrication and Characterization Study of Broadband and High Resolution of Ce/Cr-Doped Crystal Fiber for Optical Coherence Tomography Light Sources.

Degree: PhD, Electro-Optical Engineering, 2015, NSYSU

We report the fabrication and characteristics of Ce-doped fibers (CeDFs) and Cr-doped fibers (CDFs) based on drawing tower technique. The CeDFs show an emission from 480 to 650 nm, 600 to 800 nm, and 700 to 950 nm with a power density of 21.1 nW/nm, 79.1 nW/nm and 63.8 nW/nm, respectively. The CDFs exhibit an emission from 975 to 1300 nm with a power density of 27.3 nW/nm which was dominated by Cr4+ near-Gaussian ASE spectrum. For fiber-based OCT system, the measured broadband emission of CeDFs and CDFs showed four different high axial resolutions of 2.3, 1.8, 1.9, and 3-µm in air. Furthermore, fiber-based OCT system with the broadband fluorescence sources spanning the visible and near infrared regions provides the deepest penetration in biomedical specimens. A number of clinical applications have been demonstrated in a widely diverse range of areas such as ophthalmology, dermatology, dentistry, cardiology, and gastrointestinal pathologies. Fiber-based OCT system is featured with lightweight, mini size, easy assembly and can be integrated with other measurement systems to provide high-contrast and high quality imaging applications. In this study, the initial success in the development of the CeDFs and CDFs indicates that the fabricated fibers may be widely applicable as a new generation broadband source for the use in various spectroscopic OCT applications. Therefore, the proposed broadband and high axial resolution light source has a great potential for future OCT source applications, such as biological research and industrial inspection. Advisors/Committee Members: Hao-Chung Kuo (chair), Gong-Ru Lin (chair), Chin-Ping Yu (committee member), Sheng-Lung Huang (chair), Wood-Hi Cheng (chair), Nan-Kuang Chen (chair), San-Liang Lee (chair), Jian-Jang Huang (chair), Tien-Tsorng Shih (chair).

Subjects/Keywords: Biomedical optical imaging; Fiber design and fabrication; Optical coherence tomography; Ce/Cr-doped fiber

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

APA (6th Edition):

Liu, C. (2015). The Fabrication and Characterization Study of Broadband and High Resolution of Ce/Cr-Doped Crystal Fiber for Optical Coherence Tomography Light Sources. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829115-103938

Chicago Manual of Style (16th Edition):

Liu, Chun-Nien. “The Fabrication and Characterization Study of Broadband and High Resolution of Ce/Cr-Doped Crystal Fiber for Optical Coherence Tomography Light Sources.” 2015. Doctoral Dissertation, NSYSU. Accessed December 08, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829115-103938.

MLA Handbook (7th Edition):

Liu, Chun-Nien. “The Fabrication and Characterization Study of Broadband and High Resolution of Ce/Cr-Doped Crystal Fiber for Optical Coherence Tomography Light Sources.” 2015. Web. 08 Dec 2019.

Vancouver:

Liu C. The Fabrication and Characterization Study of Broadband and High Resolution of Ce/Cr-Doped Crystal Fiber for Optical Coherence Tomography Light Sources. [Internet] [Doctoral dissertation]. NSYSU; 2015. [cited 2019 Dec 08]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829115-103938.

Council of Science Editors:

Liu C. The Fabrication and Characterization Study of Broadband and High Resolution of Ce/Cr-Doped Crystal Fiber for Optical Coherence Tomography Light Sources. [Doctoral Dissertation]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829115-103938


NSYSU

3. Tzeng, Te-En. InGaAs Quantum Dots grown by Molecular Beam Epitaxy.

Degree: Master, Electro-Optical Engineering, 2011, NSYSU

In this thesis, we have reported the MBE growth, design, and fabrication of the InGaAs quantum dots (QDs) laser/semiconductor optical amplifier, broadband QDs structure, coupled double cavity structure for terahertz emission on GaAs substrate. The emission wavelengths of the strain-induced S-K growth mode QDs structures are adjusted through the composition of QDs and strain-compensated capping layer. Also, the technique of growing high quality InGaAs QDs with solid source molecular beam epitaxy has been established and characterized by double crystal X-ray diffraction, transmission electron microscopy, photoluminescence, electroluminescence measurements. For 1.3μm QDs laser samples, ridge waveguide lasers of the Fabry-Perot (FP) type are fabricated by wet-etching process. From the QDs laser L-I curve, the e2-hh2 transition at λ =1160nm have larger optical gain than e1-hh1 transition at λ =1220nm. The FP laser with 0.6μm cavity length shows a lasing peak of 1160nm at threshold. As the cavity length increase to 2μm, the lasing peak red shift to 1220nm (closed to ground state emission wavelength). This energy band gap transition phenomenon is obvious especially in the QDs laser with quantum well (QW) structure. When the injection current increase, two lasing peaks at λ= 1160 and 1175nm are observed sequentially. This unique lasing behavior is shown to be consistent with carriers localized in noninteracting dots. For the application of 1.3μm light source, we optimum the growth condition for different needs in optical coherent tomography (OCT) light source, tandem solar cell, terahertz emission light source, etc. For the super luminescence diode (SLED) in OCT, we design multi-stacked asymmetric QDs structure (AMQD), QDs in the well structure (DWell), Dwell with p-doping in well structure to investigate the carrier recombination condition and bandwidth. Comparing with 5 structures in this study, the Dwell with p-doping in well structure has a maximum EL bandwidth exceed 198nm. The large bandwidth is attributed to the QW which increases the carrier capture rate and the p-doping which provide the efficient holes in valance band. This structure provides an excellent SLED light source solution to replace the existing program. For the tandem solar cell, we use the multi-stack QDs to compose broadband absorption in 1eV range. In order to avoid the degradation in the open circuit voltage, we use InGaAs QW to reduce the QDs strain. We observed the doping effect on the built in field through the photo-reflectance measurements. For the better photocurrent collection, we use p-doping in the QW to increase the built-in field intensity to obtain higher efficiency. For the terahertz emission, the QDs embedded in coupled double-cavity structures with an AlAs/GaAs intermediate distributed Bragg reflector (DBR) are grown on GaAs substrates. Two emission peaks at 1180, 1206 nm from the QDs corresponding to the coupled double-cavity resonant modes are observed in the high reflection band. The frequency differences for the two resonant… Advisors/Committee Members: Lung-Han Peng (chair), Jian-Jang Huang (chair), Wood-Hi Cheng (chair), Sheng-Di Lin (chair), Yung-Jui Chen (chair), Keh-Yung Cheng (chair), Tsong-Sheng Lay (committee member), Ching-Hwa Ho (chair), Hao-Hsiung Lin (chair).

Subjects/Keywords: laser; super luminescence diode; solar cell; broadband; molecular beam epitaxy; quantum dot

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

APA (6th Edition):

Tzeng, T. (2011). InGaAs Quantum Dots grown by Molecular Beam Epitaxy. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-100334

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):

Tzeng, Te-En. “InGaAs Quantum Dots grown by Molecular Beam Epitaxy.” 2011. Thesis, NSYSU. Accessed December 08, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-100334.

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

MLA Handbook (7th Edition):

Tzeng, Te-En. “InGaAs Quantum Dots grown by Molecular Beam Epitaxy.” 2011. Web. 08 Dec 2019.

Vancouver:

Tzeng T. InGaAs Quantum Dots grown by Molecular Beam Epitaxy. [Internet] [Thesis]. NSYSU; 2011. [cited 2019 Dec 08]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-100334.

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

Council of Science Editors:

Tzeng T. InGaAs Quantum Dots grown by Molecular Beam Epitaxy. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-100334

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

.