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oai:www.ideals.illinois.edu:2142/80903 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Choquette, Kent D. Danner, Aaron 2015-09-25T20:08:45Z 2015-09-25T20:08:45Z 10000-01-01 2005 2005 Single mode operation in vertical cavity surface-emitting lasers is important for sensing and communications applications. A comprehensive study of the use of a periodic array of etched circular holes in the top distributed Bragg reflector of a vertical cavity surface-emitting laser to achieve single mode operation with a simple fabrication process is carried out. A theoretical analysis of photonic crystals is conducted to design devices, and the accuracy of the resulting model in predicting modal characteristics is studied experimentally. The oxide aperture size is optimized to give maximum output power and lower threshold current, the role of loss in improving modal properties is investigated, and high speed operation is characterized. Optimized lasers exhibit sub-milliamp threshold current and operate in the fundamental lateral mode for all currents. Made available in DSpace on 2015-09-25T20:08:45Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3182248.pdf: 3731207 bytes, checksum: c51bac1507b42ea6dafd0e503d0b4879 (MD5) Previous issue date: 2005 Embargo set by: Seth Robbins for item 82185 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 94 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005. http://hdl.handle.net/2142/80903 (MiAaPQ)AAI3182248 eng Physics, Optics Vertical -Cavity Surface -Emitting Lasers Operating in Photonic Crystal Waveguide Defect Modes text Electrical Engineering Electrical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.