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https://hdl.handle.net/2142/18901
Description
Title
Optical properties of semiconductor quantum wires
Author(s)
Citrin, David Scott
Issue Date
1992
Doctoral Committee Chair(s)
Chang, Yia-Chung
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
optics
optical properties
semiconductors
quantum wires
theoretical physics
subband structure
Language
en
Abstract
This thesis presents theoretical investigations of the sub band structure and optical properties
of semiconductor quantum wires. For the subband structure, we employ multiband
effective-mass theory and the effective bond-orbital model both of which fully account for
the band mixing and material anisotropy. We also treat the structure geometry in detail
taking account of such effects as the compositional grading across material interfaces. Based
on the subband structure, we calculate optical properties of quantum-wire structures. A
recuring theme is the cross-over from one- to ~wo-dimensional behavior in these structures.
This complicated behavior procludes the application of simple theoretical models to obtain
the electronic structure. In particular, we calculate laser properties of quantum wires grown
in V-grooves and find enhanced performance compared with quantum-well lasers. We also
investigate optical anisotropy in quantum-wire arrays and propose an electro-optic device
based on such structures.
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