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PHOTONIC CRYSTAL NANOCAVITY LASERS FOR INTEGRATION
by
Ling Lu
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(ELECTRICAL ENGINEERING)
May 2010
Copyright 2010 Ling Lu
Object Description
| Title | Photonic crystal nanocavity lasers for integration |
| Author | Lu, Ling |
| Author email | lingl@usc.edu; lely_lu@hotmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Electrical Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2010-01-11 |
| Date submitted | 2010 |
| Restricted until | Unrestricted |
| Date published | 2010-01-21 |
| Advisor (committee chair) | O'Brien, John D. |
| Advisor (committee member) |
Dapkus, P. Daniel Haas, Stephan |
| Abstract | The goal of the work throughout this thesis is to develop two-dimensional photonic crystal micro/nanocavity lasers to meet all the five requirements for practical on-chip sources. They are 1) electrical injection, 2) continuous-wave operation at room temperature and above, 3) sufficient in-plane output power, 4) high modulation bandwidth and low noise and 5) an integration platform.; Chapter 1 discussed the five requirements.; Chapter 2 worked out the third requirement: sufficient laser output power was collected under pulsed operations.; Chapter 3 picked quantum well intermixing as a solution to the fifth requirement and worked out the fabrication.; Chapter 4 worked out the fifth requirement by integrating photonic crystal nanocavity laser with the intermixing approach.; Chapter 5 worked out a high-performance laser-waveguide coupling design using the intermixing platform.; Chapter 6 obtained the gain compression factor and thermal resistance of a room-temperature continuous-wave laser on sapphire. Gain compression is a limiting factor for modulation bandwidth in the fourth requirement; thermal resistance is the key parameter for the second requirement.; Chapter 7 analyzed the symmetry properties in two-dimensional photonic crystal waveguides. This analysis explains the modes in Type B photonic crystal structure which may lead to high-quality-factor on-substrate designs that can fulfill all the requirements.; Appendix A calculated the surface states in the Gamma-M direction of the triangular photonic crystal lattice in the membrane structure. The understanding of the surface modes is helpful to the design of lattice termination at device junctions and boundaries.; Appendix B showed the application of digital image processing in nano-fabrication. Fabrication imperfections can be quantified by analyzing the SEM images. Sub-pixel alignment is achieved in electron-beam-lithography using correlation techniques.; Appendix C summarized the fabrication recipes. |
| Keyword | photonic crystal; semiconductor laser; quantum well intermixing; photonic integration |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m2808 |
| Contributing entity | University of Southern California |
| Rights | Lu, Ling |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | cisadmin@dots.usc.edu |
| Filename | etd-Lu-3450 |
| Archival file | uscthesesreloadpub_Volume29/etd-Lu-3450.pdf |
Description
| Title | Page 1 |
| Contributing entity | University of Southern California |
| Repository email | cisadmin@dots.usc.edu |
| Full text | PHOTONIC CRYSTAL NANOCAVITY LASERS FOR INTEGRATION by Ling Lu A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (ELECTRICAL ENGINEERING) May 2010 Copyright 2010 Ling Lu |
