Long-wave infrared multi-wavelength optical source for standoff detection of chemical warfare agents

We have designed and built a wavelength-tunable optical source for standoff detection of gaseous chemicals by differential absorption spectrometry in the long-wave infrared. It is based on a nanosecond 2 mu m single-frequency optical parametric oscillator, whose idler wave is amplified in large aper...

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Veröffentlicht in:Applied optics (2004) 2020-12, Vol.59 (35), p.11156-11166
Hauptverfasser: Melkonian, Jean-Michel, Armougom, Julie, Raybaut, Myriam, Dherbecourt, Jean-Baptiste, Gorju, Guillaume, Cezard, Nicolas, Godard, Antoine, Pasiskevicius, Valdas, Coetzee, Riaan, Kadlcak, Jiri
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Sprache:eng
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Zusammenfassung:We have designed and built a wavelength-tunable optical source for standoff detection of gaseous chemicals by differential absorption spectrometry in the long-wave infrared. It is based on a nanosecond 2 mu m single-frequency optical parametric oscillator, whose idler wave is amplified in large aperture Rb:PPKTP crystals. The signal and idler waves are mixed in ZnGeP2 crystals to produce single-frequency tunable radiation in the 7.5-10.5 mu n range. The source was integrated into a direct detection lidar to measure sarin and sulfur mustard inside a dosed chamber, in an integrated path configuration with a noncooperative target. (C) 2020 Optical Society of America
ISSN:1559-128X
2155-3165
2155-3165
1539-4522
DOI:10.1364/AO.410053