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Chang, Yia-Chung Wen, Guozhong 2011-05-07T13:27:43Z 2011-05-07T13:27:43Z 10000-01-01 1994 In this thesis the electronic and optical properties of confined and unconfined excitons in semiconductor quantum heterostructures are investigated. We use multiband effective mass theory to solve the subband structure in which valence band mixing is properly taking into account. With the aid of supercomputer and recently developed k-space sampling technique we can deal with both discrete exciton states and exciton continuum states properly and hence the photoabsorption coefficient. These techniques are applied to calculate the electroabsorption, resonant Raman scattering in GaAs quantum wells, and absorption of above barrier excitons in both type I and type II heterostructures. We find that the valence band mixing is important in explaining the fine structures in the spectrum for the electroabsorption and PLE for above barrier excitons. In the RRS profile, the exciton continuum states are necessary in order to explain the experimental data. Made available in DSpace on 2011-05-07T13:27:43Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9512592.pdf: 2612097 bytes, checksum: b3eeb897b05335d2be009695ff25a4ec (MD5) Previous issue date: 1994 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:55:03Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:25:38-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9512592 (UMI)AAI9512592 http://hdl.handle.net/2142/22061 eng Copyright 1994 Wen, Guozhong Physics, Condensed Matter Optical properties of confined and unconfined excitons in semiconductor quantum heterostructures text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.