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Title: Many-body effects in the gain spectra of highly excited quantum-dot lasers

Abstract

Optical gain spectra are computed for quantum dots under high excitation conditions, where there is a non-negligible two-dimensional carrier density surrounding the dots. Using a screened Hartree-Fock theory to describe the influence of the Coulomb interaction, we find different self-energy shifts for the dot and quantum-well transitions. Furthermore, in contrast to the result for quantum-well and bulk systems, the peak gain at the quantum-dot transition computed including Coulomb effects is reduced from its free carrier value.

Authors:
; ;
Publication Date:
Research Org.:
Sandia National Laboratory
Sponsoring Org.:
(US)
OSTI Identifier:
40277589
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 64; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevB.64.115315; Othernumber: PRBMDO000064000011115315000001; 064135PRB; PBD: 15 Sep 2001; Journal ID: ISSN 0163-1829
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARRIER DENSITY; EXCITATION; LASERS; SELF-ENERGY; SPECTRA

Citation Formats

Schneider, H C, Chow, W W, and Koch, S W. Many-body effects in the gain spectra of highly excited quantum-dot lasers. United States: N. p., 2001. Web. doi:10.1103/PhysRevB.64.115315.
Schneider, H C, Chow, W W, & Koch, S W. Many-body effects in the gain spectra of highly excited quantum-dot lasers. United States. doi:10.1103/PhysRevB.64.115315.
Schneider, H C, Chow, W W, and Koch, S W. Sat . "Many-body effects in the gain spectra of highly excited quantum-dot lasers". United States. doi:10.1103/PhysRevB.64.115315.
@article{osti_40277589,
title = {Many-body effects in the gain spectra of highly excited quantum-dot lasers},
author = {Schneider, H C and Chow, W W and Koch, S W},
abstractNote = {Optical gain spectra are computed for quantum dots under high excitation conditions, where there is a non-negligible two-dimensional carrier density surrounding the dots. Using a screened Hartree-Fock theory to describe the influence of the Coulomb interaction, we find different self-energy shifts for the dot and quantum-well transitions. Furthermore, in contrast to the result for quantum-well and bulk systems, the peak gain at the quantum-dot transition computed including Coulomb effects is reduced from its free carrier value.},
doi = {10.1103/PhysRevB.64.115315},
journal = {Physical Review B},
issn = {0163-1829},
number = 11,
volume = 64,
place = {United States},
year = {2001},
month = {9}
}