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Proceedings Paper

Quantum cascade detection
Author(s): Laure Gendron; Cédric Koeniguer; Xavier Marcadet; Vincent Berger
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Paper Abstract

A photovoltaic intersubband detector based on electron transfer on a cascade of quantum levels is presented: a Quantum Cascade Detector (QCD). The highest photoresponse of intersubband transition based photovoltaic detectors is demonstrated: 44 mA/W at null bias. Further improvements permit to suppress the leakage current and to increase the resistivity R0A. Useless cross-transitions have been eliminated finally leading to a high resistance narrow band photodetector with a Johnson noise detectivity at 50 K comparable to QWIPs. Because they work with no dark current, QCDs are very promising for small pixel and large focal plane array applications.

Paper Details

Date Published: 6 December 2004
PDF: 9 pages
Proc. SPIE 5612, Electro-Optical and Infrared Systems: Technology and Applications, (6 December 2004); doi: 10.1117/12.578785
Show Author Affiliations
Laure Gendron, Thales Research and Technology (France)
Cédric Koeniguer, Univ. de Paris 7 (France)
Xavier Marcadet, Thales Research and Technology (France)
Vincent Berger, Univ. Paris 7 (France)

Published in SPIE Proceedings Vol. 5612:
Electro-Optical and Infrared Systems: Technology and Applications
Ronald G. Driggers; David A. Huckridge, Editor(s)

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