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Proceedings Paper

State of the art of quantum cascade photodetectors
Author(s): Amandine Buffaz; Mathieu Carras; Laetitia Doyennette; Alexandru Nedelcu; Philippe Bois; Vincent Berger
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Paper Abstract

The Quantum Cascade Detector (QCD) is a multiple quantum well photodetector working at low bias or zero bias. It has a zero dark current occurring at 0V, together with a high photovoltaic photoresponse, since the QCD does not need any applied field to improve the collection of electrons. QCDs have been tested at various wavelengths, from short wavelengths (1.5 microns) up to THz waves, through the entire infrared spectrum (middle and long wavelengths). Theory of transport in QCD is now well established, and leads to accurate calculations of current and noise in QCDs, with a very good agreement with experimental results. Latest results and state of the art of performances of QCDs are presented.

Paper Details

Date Published: 3 May 2010
PDF: 10 pages
Proc. SPIE 7660, Infrared Technology and Applications XXXVI, 76603Q (3 May 2010); doi: 10.1117/12.853525
Show Author Affiliations
Amandine Buffaz, Univ. Paris Diderot (France)
Alcatel-Thales III-V Lab. (France)
Mathieu Carras, Alcatel-Thales III-V Lab. (France)
Laetitia Doyennette, Univ. Paris Diderot (France)
Alexandru Nedelcu, Alcatel-Thales III-V Lab. (France)
Philippe Bois, Alcatel-Thales III-V Lab. (France)
Vincent Berger, Univ. Paris Diderot (France)
Alcatel-Thales III-V Lab. (France)

Published in SPIE Proceedings Vol. 7660:
Infrared Technology and Applications XXXVI
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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