TITLE

Quantum cascade detectors for very long wave infrared detection

AUTHOR(S)
Buffaz, A.; Carras, M.; Doyennette, L.; Nedelcu, A.; Marcadet, X.; Berger, V.
PUB. DATE
April 2010
SOURCE
Applied Physics Letters;4/26/2010, Vol. 96 Issue 17, p172101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A high responsivity GaAs/AlGaAs quantum cascade detector is demonstrated at a wavelength of 15 μm. The quantum design is optimized for negative bias operation, so that the capture of photoexcited electrons back to the fundamental level is minimized. The detectivity of the detector presented here reaches 1.1×1012 Jones at 25 K for an applied bias of -0.6 V.
ACCESSION #
50174009

 

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