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Mid-infrared quantum cascade detectors for applications in spectroscopy and pyrometry

Authors
  • Hofstetter, D.
  • Giorgetta, F.R.
  • Baumann, E.
  • Yang, Q.K.
  • Manz, C.
  • Köhler, K.
Publication Date
Jan 01, 2010
Source
Fraunhofer-ePrints
Keywords
Language
English
License
Unknown
External links

Abstract

In this paper, we give an overview of quantum cascade detector technology for the near- and mid-infrared wavelength range. Thanks to their photovoltaic operating principle, the most advanced quantum cascade detectors offer great opportunities in terms of high detection speed, reliable room temperature operation, and excellent Johnson noise limited detectivity. Besides some important features dealing with their fabrication and their general characteristics, we will also briefly present some possibilities for performance improvement. Elementary theoretical considerations adopted from photoconductive detectors confirm that optimization of such devices always involves various tradeoffs.

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