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Acoustically pumped stimulated emission in GaAs/AlGaAs quantum wells

Nadtochii, AB; Korotchenkov, OA and Grimmeiss, Hermann LU (2003) In Physical Review B (Condensed Matter and Materials Physics) 67(12).
Abstract
We report on an extremely narrow linewidth of a two-dimensional electron-gas photoluminescence in GaAs/AlGaAs quantum wells pumped by ultrasonic vibrations. Below the threshold pumping amplitude, the observed emission line is weak, broad, and undergoes a redshift consistent with the evolution of an electron-hole plasma recombination in the oscillating piezoelectric fields accompanying the sample vibrations. Above the threshold, a narrow emission line arises, which sharpens up to similar to0.1-meV full width at half maximum, and gains intensity with increasing pumping amplitude. Weighing different alternatives, it is suggested that the data are best explained within the framework of stimulated emission originating from the acoustically... (More)
We report on an extremely narrow linewidth of a two-dimensional electron-gas photoluminescence in GaAs/AlGaAs quantum wells pumped by ultrasonic vibrations. Below the threshold pumping amplitude, the observed emission line is weak, broad, and undergoes a redshift consistent with the evolution of an electron-hole plasma recombination in the oscillating piezoelectric fields accompanying the sample vibrations. Above the threshold, a narrow emission line arises, which sharpens up to similar to0.1-meV full width at half maximum, and gains intensity with increasing pumping amplitude. Weighing different alternatives, it is suggested that the data are best explained within the framework of stimulated emission originating from the acoustically pumped injection of enhanced electron and hole densities. (Less)
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
67
issue
12
publisher
American Physical Society
external identifiers
  • wos:000182158000060
  • scopus:0038558255
ISSN
1098-0121
DOI
10.1103/PhysRevB.67.125301
language
English
LU publication?
yes
id
9576737c-05ec-4b18-b8a3-b36d89a8d5f9 (old id 313252)
date added to LUP
2007-08-16 17:01:42
date last changed
2018-05-29 11:48:44
@article{9576737c-05ec-4b18-b8a3-b36d89a8d5f9,
  abstract     = {We report on an extremely narrow linewidth of a two-dimensional electron-gas photoluminescence in GaAs/AlGaAs quantum wells pumped by ultrasonic vibrations. Below the threshold pumping amplitude, the observed emission line is weak, broad, and undergoes a redshift consistent with the evolution of an electron-hole plasma recombination in the oscillating piezoelectric fields accompanying the sample vibrations. Above the threshold, a narrow emission line arises, which sharpens up to similar to0.1-meV full width at half maximum, and gains intensity with increasing pumping amplitude. Weighing different alternatives, it is suggested that the data are best explained within the framework of stimulated emission originating from the acoustically pumped injection of enhanced electron and hole densities.},
  articleno    = {125301},
  author       = {Nadtochii, AB and Korotchenkov, OA and Grimmeiss, Hermann},
  issn         = {1098-0121},
  language     = {eng},
  number       = {12},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Acoustically pumped stimulated emission in GaAs/AlGaAs quantum wells},
  url          = {http://dx.doi.org/10.1103/PhysRevB.67.125301},
  volume       = {67},
  year         = {2003},
}