TITLE

Quantum-cascade lasers without injector regions operating above room temperature

AUTHOR(S)
Friedrich, Andrea; Boehm, Gerhard; Amann, Markus Christian; Scarpa, Giuseppe
PUB. DATE
April 2005
SOURCE
Applied Physics Letters;4/18/2005, Vol. 86 Issue 16, p161114
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present above-room-temperature operation of an injectorless quantum-cascade (QC) laser. The active region is designed as a four-level staircase and has been realized in the strain-compensated material system Ga0.4In0.6As/Al0.56In0.44As based on InP. In pulsed operation the lasers work up to a heat-sink temperature of 340 K, the highest temperature achieved so far with injectorless QC lasers. A large wavelength shift is observed for higher bias fields and (therefore) at high temperatures (10 μm at 77 K and 8.4 μm at 300 K).
ACCESSION #
17227472

 

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