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

Article Article scientifique Article Detection of mid-IR radiation by sum frequency generation for free space optical communication eng 2005 author Karstad Ketil 585975 author Stefanov André 95103 author Wegmuller Mark 131026 author Zbinden Hugo 0000-0002-9237-1700 29543 author Gisin Nicolas 23716 author Aellen Thierry author Beck Mattias author Faist Jérôme 537-544 10.1016/j.optlaseng.2004.05.006 0143-8166 http://linkinghub.elsevier.com/retrieve/pii/S0143816604001083 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. Sum frequencygeneration Mid-infrared detection Quantum cascade laser Dewey 500.2 35 Groupe de physique appliquée 135 false Optics and lasers in engineering 43 3-5 44f8d3dd-2213-43f4-9368-57acfd14441a Article (Published version) Restricted Zbinden214_midir_sumfrequency.pdf 235413 application/pdf restrictedAccess Faculté des sciences / Section de physique / Groupe de physique appliquée

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Detection of mid-IR radiation by sum frequency generation for free space optical communication	Optics and lasers in engineering			2005	751	0

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Karstad, Ketil