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Title: Features of simultaneous ground- and excited-state lasing in quantum dot lasers

Abstract

The lasing spectra and light-current (L-I) characteristics of an InAs/InGaAs quantum dot laser emitting in the simultaneous lasing mode at the ground- and excited-state optical transitions are studied. Lasing and spontaneous emission spectra are compared. It is shown that ground-state quenching of lasing is observed even in the absence of active region self-heating or an increase in homogeneous broadening with growth in the current density. It is found that the intensities of both lasing and spontaneous emission at the ground-state transition begin to decrease at a pump intensity that significantly exceeds the two-level lasing threshold. It is also found that different groups of quantum dots are involved in ground- and excited-state lasing.

Authors:
; ;  [1];  [2]; ; ;  [1]
  1. Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation)
  2. Innolume GmbH (Germany)
Publication Date:
OSTI Identifier:
22039033
Resource Type:
Journal Article
Resource Relation:
Journal Name: Semiconductors; Journal Volume: 46; Journal Issue: 2; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CURRENT DENSITY; EMISSION; EMISSION SPECTRA; EXCITED STATES; GALLIUM ARSENIDES; GROUND STATES; INDIUM ARSENIDES; LASERS; QUANTUM DOTS; QUENCHING

Citation Formats

Zhukov, A. E., E-mail: zhukov@beam.ioffe.ru, Maximov, M. V., Shernyakov, Yu. M., Livshits, D. A., Savelyev, A. V., Zubov, F. I., and Klimenko, V. V. Features of simultaneous ground- and excited-state lasing in quantum dot lasers. United States: N. p., 2012. Web. doi:10.1134/S1063782612020285.
Zhukov, A. E., E-mail: zhukov@beam.ioffe.ru, Maximov, M. V., Shernyakov, Yu. M., Livshits, D. A., Savelyev, A. V., Zubov, F. I., & Klimenko, V. V. Features of simultaneous ground- and excited-state lasing in quantum dot lasers. United States. doi:10.1134/S1063782612020285.
Zhukov, A. E., E-mail: zhukov@beam.ioffe.ru, Maximov, M. V., Shernyakov, Yu. M., Livshits, D. A., Savelyev, A. V., Zubov, F. I., and Klimenko, V. V. Wed . "Features of simultaneous ground- and excited-state lasing in quantum dot lasers". United States. doi:10.1134/S1063782612020285.
@article{osti_22039033,
title = {Features of simultaneous ground- and excited-state lasing in quantum dot lasers},
author = {Zhukov, A. E., E-mail: zhukov@beam.ioffe.ru and Maximov, M. V. and Shernyakov, Yu. M. and Livshits, D. A. and Savelyev, A. V. and Zubov, F. I. and Klimenko, V. V.},
abstractNote = {The lasing spectra and light-current (L-I) characteristics of an InAs/InGaAs quantum dot laser emitting in the simultaneous lasing mode at the ground- and excited-state optical transitions are studied. Lasing and spontaneous emission spectra are compared. It is shown that ground-state quenching of lasing is observed even in the absence of active region self-heating or an increase in homogeneous broadening with growth in the current density. It is found that the intensities of both lasing and spontaneous emission at the ground-state transition begin to decrease at a pump intensity that significantly exceeds the two-level lasing threshold. It is also found that different groups of quantum dots are involved in ground- and excited-state lasing.},
doi = {10.1134/S1063782612020285},
journal = {Semiconductors},
number = 2,
volume = 46,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2012},
month = {Wed Feb 15 00:00:00 EST 2012}
}
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