DocumentCode :
42981
Title :
Quantum Cascade Lasers in the InAs/AlSb Material System
Author :
Baranov, Alexei N. ; Teissier, Roland
Author_Institution :
Inst. of Electron. & Syst., Univ. Montpellier 2, Montpellier, France
Volume :
21
Issue :
6
fYear :
2015
fDate :
Nov.-Dec. 2015
Firstpage :
1
Lastpage :
12
Abstract :
We review the current state of the InAs/AlSb quantum cascade laser (QCL) technology. These materials have brought significant progress in short wavelength QCL due to the high-conduction band offset. The first QCLs emitting below 3 μm have been demonstrated in this system. The short wavelength limit of QCL operation has further been moved down to 2.6 μm. This system is also well suited for far-infrared QCLs because high intersubband gain can be achieved at low transition energies due to the small electron effective mass in InAs. Room temperature operation has been demonstrated in InAs-based QCLs to a wavelength of 21 μm, for the first time for any semiconductor laser emitting above 16 μm. Both short- and long-wavelength single-frequency distributed feedback InAs/AlSb QCLs have been realized, as well as widely tunable external cavity sources for the 3-3.5 μm spectral range.
Keywords :
III-V semiconductors; aluminium compounds; conduction bands; distributed feedback lasers; effective mass; indium compounds; laser beams; quantum cascade lasers; InAs-AlSb; far-infrared QCL; high intersubband gain; high-conduction band offset; long-wavelength single-frequency distributed feedback QCL; quantum cascade lasers; short wavelength limit; short-wavelength single-frequency distributed feedback QCL; small electron effective mass; temperature 293 K to 298 K; transition energies; widely tunable external cavity sources; Absorption; Doping; Optical waveguides; Photonic band gap; Quantum cascade lasers; Strain; Quantum cascade lasers (QCLs); antimonides; infrared emitters;
fLanguage :
English
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
1077-260X
Type :
jour
DOI :
10.1109/JSTQE.2015.2426412
Filename :
7094227
Link To Document :
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