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Scientific article
English

Detection of mid-IR radiation by sum frequency generation for free space optical communication

Published inOptics and lasers in engineering, vol. 43, no. 3-5, p. 537-544
Publication date2005
Abstract

We present an experiment where mid-infrared radiation is detected indirectly via the second-order non-linear process of sum frequency generation. The mid-infrared sources used for the experiment are quantum cascade lasers, and we use a pump wavelength that yields an up-converted wavelength within the detection window of Silicon avalanche photo diodes. Compared with direct detection using state-of-the-art mid-infrared semiconductor detectors, the detection scheme we propose in this paper has the advantages of greater bandwidth and lower noise equivalent power.

Keywords
  • Sum frequencygeneration
  • Mid-infrared detection
  • Quantum cascade laser
Citation (ISO format)
KARSTAD, Ketil et al. Detection of mid-IR radiation by sum frequency generation for free space optical communication. In: Optics and lasers in engineering, 2005, vol. 43, n° 3-5, p. 537–544. doi: 10.1016/j.optlaseng.2004.05.006
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Identifiers
ISSN of the journal0143-8166
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