Temperature dependence of the threshold current in quantum-well WGM lasers (2.0–2.5 μm)

The temperature dependence of the threshold current and emission spectra of disk-shaped quantum-well whispering-gallery mode (WGM) lasers is studied in the temperature range of 80–463 K in which the laser emission wavelength increases from 2 to 2.5 μm. It is shown that lasing is observed up to 190°C...

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Bibliographic Details
Published in:Semiconductors (Woodbury, N.Y.) N.Y.), 2013-06, Vol.47 (6), p.831-834
Main Authors: Imenkov, A. N., Sherstnev, V. V., Kovalev, I. V., Il’inskaya, N. D., Serebrennikova, O. Yu, Teissier, R., Baranov, A. N., Yakovlev, Yu. P.
Format: Article
Language:English
Subjects:
COMPRESSION
Electronics
ELECTRONS
EMISSION
EMISSION SPECTRA
Engineering Sciences
Invisibility
LASERS
Magnetic Materials
Magnetism
MATERIALS SCIENCE
Physics
Physics and Astronomy
Physics of Semiconductor Devices
QUANTUM WELLS
RECOMBINATION
SPIN
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
THRESHOLD CURRENT
Toy industry
VALENCE
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Summary:The temperature dependence of the threshold current and emission spectra of disk-shaped quantum-well whispering-gallery mode (WGM) lasers is studied in the temperature range of 80–463 K in which the laser emission wavelength increases from 2 to 2.5 μm. It is shown that lasing is observed up to 190°C. Radiative recombination is dominant up to a temperature of 300 K, and nonradiative Auger recombination, in which a recombining electron gives energy to another electron, is so at higher temperatures. The spin-orbit split-off valence subband is not involved in recombination processes, which is attributed to mechanical compression of the quantum-well material.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782613060109