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3 May 2010 State of the art of quantum cascade photodetectors
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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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Amandine Buffaz, Mathieu Carras, Laetitia Doyennette, Alexandru Nedelcu, Philippe Bois, and Vincent Berger "State of the art of quantum cascade photodetectors", Proc. SPIE 7660, Infrared Technology and Applications XXXVI, 76603Q (3 May 2010);

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