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Proceedings Paper

Mid-infrared quantum cascade detectors for applications in spectroscopy and pyrometry
Author(s): Daniel Hofstetter; Fabrizio R. Giorgetta; Esther Baumann; Quankui Yang; Christian Manz; Klaus Köhler
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Paper Abstract

An overview of quantum cascade detector technology for the near- and mid-infrared wavelength range will be given. Thanks to photovoltaic instead of photoconductive operation, quantum cascade detectors offer great opportunities in terms of detection speed, room temperature operation, and detectivity. Besides some crucial issues dealing with fabrication and general characteristics, some possibilities for performance improvement will also be briefly presented. In a theory section, some basic considerations adopted from photoconductive detectors confirm the necessity of various trade-offs for the optimization of such devices. Nevertheless, we will show several possible measures to push the key performance figures of these detectors closer to their physical and technological limits.

Paper Details

Date Published: 22 January 2010
PDF: 11 pages
Proc. SPIE 7608, Quantum Sensing and Nanophotonic Devices VII, 76081N (22 January 2010); doi: 10.1117/12.853351
Show Author Affiliations
Daniel Hofstetter, Univ. of Neuchâtel (Switzerland)
Fabrizio R. Giorgetta, National Institute of Standards and Technology (United States)
Esther Baumann, National Institute of Standards and Technology (United States)
Quankui Yang, Fraunhofer Institute for Applied Solid State Physics (Germany)
Christian Manz, Fraunhofer Institute for Applied Solid State Physics (Germany)
Klaus Köhler, Fraunhofer Institute for Applied Solid State Physics (Germany)


Published in SPIE Proceedings Vol. 7608:
Quantum Sensing and Nanophotonic Devices VII
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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