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Title: Theory of optical and electronic properties of semiconductor heterostructures with many-body effects

Abstract

Optical and electronic properties of semiconductors heterostructures are analyzed, combining many-body and band structure engineering techniques. The Coulomb interaction is considered in different excitation regimes. For the low density excitonic limit, it is shown that superlattices can be modelled as 3D effective anisotropic media and the method is applied to the computation of exciton binding energies. In the high density regime, coupled band optical Bloch equations are obtained, combining Coulomb effects with the solutions of the Luttinger Hamiltonian, and the problem is solved in general under quasi-equilibrium conditions. Expressions for the band gap shift and the Coulomb enhancement in a Pade' approximation are obtained and solved in the context of a quasi-statically screened Coulomb interaction. The resulting equations are used to study the influence of band-structure and many-body effects in the gain and [alpha]-factor of both lattice-matched and strained quantum well lasers.

Authors:
Publication Date:
Research Org.:
Arizona Univ., Tucson, AZ (United States)
OSTI Identifier:
6931482
Resource Type:
Miscellaneous
Resource Relation:
Other Information: Thesis (Ph.D.)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; HETEROJUNCTIONS; ELECTRICAL PROPERTIES; OPTICAL PROPERTIES; BAND THEORY; COULOMB FIELD; SUPERLATTICES; THEORETICAL DATA; DATA; ELECTRIC FIELDS; INFORMATION; JUNCTIONS; NUMERICAL DATA; PHYSICAL PROPERTIES; SEMICONDUCTOR JUNCTIONS; 360606* - Other Materials- Physical Properties- (1992-); 665400 - Quantum Physics Aspects of Condensed Matter- (1992-)

Citation Formats

Pereira, Jr, M F. Theory of optical and electronic properties of semiconductor heterostructures with many-body effects. United States: N. p., 1992. Web.
Pereira, Jr, M F. Theory of optical and electronic properties of semiconductor heterostructures with many-body effects. United States.
Pereira, Jr, M F. 1992. "Theory of optical and electronic properties of semiconductor heterostructures with many-body effects". United States.
@article{osti_6931482,
title = {Theory of optical and electronic properties of semiconductor heterostructures with many-body effects},
author = {Pereira, Jr, M F},
abstractNote = {Optical and electronic properties of semiconductors heterostructures are analyzed, combining many-body and band structure engineering techniques. The Coulomb interaction is considered in different excitation regimes. For the low density excitonic limit, it is shown that superlattices can be modelled as 3D effective anisotropic media and the method is applied to the computation of exciton binding energies. In the high density regime, coupled band optical Bloch equations are obtained, combining Coulomb effects with the solutions of the Luttinger Hamiltonian, and the problem is solved in general under quasi-equilibrium conditions. Expressions for the band gap shift and the Coulomb enhancement in a Pade' approximation are obtained and solved in the context of a quasi-statically screened Coulomb interaction. The resulting equations are used to study the influence of band-structure and many-body effects in the gain and [alpha]-factor of both lattice-matched and strained quantum well lasers.},
doi = {},
url = {https://www.osti.gov/biblio/6931482}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}

Miscellaneous:
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