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Controlling many-body effects in the midinfrared gain and terahertz absorption of quantum cascade laser structures

Pereira, Mauro F; Lee, S.-C. and Wacker, Andreas LU (2004) In Physical Review B (Condensed Matter and Materials Physics) 69.
Abstract
A many-body theory based on nonequilibrium Green functions, in which transport and optics are treated on a microscopic quantum-mechanical basis, is used to compute gain and absorption in the optical and terahertz regimes in quantum cascade laser structures. The relative importance of Coulomb interactions for different intersubband transitions depends strongly on the spatial overlap of the wave functions and the specific nonequilibrium populations within the subbands. The magnitude of the Coulomb effects can be controlled by changing the operation bias.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
69
publisher
American Physical Society
external identifiers
  • Scopus:42749098468
ISSN
1098-0121
DOI
10.1103/PhysRevB.69.205310
language
English
LU publication?
yes
id
e13f3e0b-575f-4f46-abaa-aacf64ac562b (old id 1360504)
date added to LUP
2009-03-17 15:44:09
date last changed
2016-12-04 04:41:36
@misc{e13f3e0b-575f-4f46-abaa-aacf64ac562b,
  abstract     = {A many-body theory based on nonequilibrium Green functions, in which transport and optics are treated on a microscopic quantum-mechanical basis, is used to compute gain and absorption in the optical and terahertz regimes in quantum cascade laser structures. The relative importance of Coulomb interactions for different intersubband transitions depends strongly on the spatial overlap of the wave functions and the specific nonequilibrium populations within the subbands. The magnitude of the Coulomb effects can be controlled by changing the operation bias.},
  author       = {Pereira, Mauro F and Lee, S.-C. and Wacker, Andreas},
  issn         = {1098-0121},
  language     = {eng},
  publisher    = {ARRAY(0x99a19b8)},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Controlling many-body effects in the midinfrared gain and terahertz absorption of quantum cascade laser structures},
  url          = {http://dx.doi.org/10.1103/PhysRevB.69.205310},
  volume       = {69},
  year         = {2004},
}