Quantum cascade detection

Laure Gendron; Cédric Koeniguer; Xavier Marcadet; Vincent Berger

doi:10.1117/12.578785

6 December 2004 Quantum cascade detection

Laure Gendron, Cédric Koeniguer, Xavier Marcadet, Vincent Berger

Proceedings Volume 5612, Electro-Optical and Infrared Systems: Technology and Applications; (2004) https://doi.org/10.1117/12.578785
Event: European Symposium on Optics and Photonics for Defence and Security, 2004, London, United Kingdom

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.

Citation Download Citation

Laure Gendron, Cédric Koeniguer, Xavier Marcadet, and Vincent Berger "Quantum cascade detection", Proc. SPIE 5612, Electro-Optical and Infrared Systems: Technology and Applications, (6 December 2004); https://doi.org/10.1117/12.578785

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