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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 27 — Sep. 20, 2008
  • pp: 4884–4887

Optically multiplexed multi-gas detection using quantum cascade laser photoacoustic spectroscopy

Anadi Mukherjee, Manu Prasanna, Michael Lane, Rowel Go, Ilya Dunayevskiy, Alexei Tsekoun, and C. Kumar N. Patel  »View Author Affiliations


Applied Optics, Vol. 47, Issue 27, pp. 4884-4887 (2008)
http://dx.doi.org/10.1364/AO.47.004884


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Abstract

We report high-throughput, nondispersive optical multiplexing of laser beams using a scanning galvanometer. We have utilized this technique for multispecies trace-gas detection using multiple quantum cascade laser photoacoustic spectroscopy. We demonstrate switching from one laser to another in less than 1 s, a performance level needed for a comprehensive multispecies sensor, and a high signal-to-noise ratio detection of five gaseous components, NH 3 , NO 2 , dimethyl methyl phosphonate (DMMP, a simulant for nerve agents), acetone, and ethylene glycol, in a room air gas mixture containing 3 ppb of NH 3 , 8 ppb of NO 2 , 20 ppb of DMMP, 30 ppb of acetone, and 40 ppb of ethylene glycol.

© 2008 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(300.1030) Spectroscopy : Absorption

ToC Category:
Spectroscopy

History
Original Manuscript: June 12, 2008
Manuscript Accepted: July 16, 2008
Published: September 12, 2008

Citation
Anadi Mukherjee, Manu Prasanna, Michael Lane, Rowel Go, Ilya Dunayevskiy, Alexei Tsekoun, and C. Kumar N. Patel, "Optically multiplexed multi-gas detection using quantum cascade laser photoacoustic spectroscopy," Appl. Opt. 47, 4884-4887 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-27-4884

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