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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 32 — Nov. 10, 2004
  • pp: 6040–6046

Pulsed quantum-cascade laser-based sensor for trace-gas detection of carbonyl sulfide

Gerard Wysocki, Matt McCurdy, Stephen So, Damien Weidmann, Chad Roller, Robert F. Curl, and Frank K. Tittel  »View Author Affiliations


Applied Optics, Vol. 43, Issue 32, pp. 6040-6046 (2004)
http://dx.doi.org/10.1364/AO.43.006040


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Abstract

Simultaneous exhaled carbonyl sulfide (OCS) and carbon dioxide concentration measurements in human breath are demonstrated with a compact pulsed quantum-cascade laser-based gas sensor. We achieved a noise-equivalent sensitivity (1σ) of 1.2 parts per billion by measuring a well-isolated OCS P(11) absorption line in the ν3 band at 2057.6 cm-1 using an astigmatic Herriott cell of 36-m optical path length and 0.4-s acquisition time.

© 2004 Optical Society of America

OCIS Codes
(280.3420) Remote sensing and sensors : Laser sensors
(300.1030) Spectroscopy : Absorption

History
Original Manuscript: March 19, 2004
Revised Manuscript: July 12, 2004
Published: November 10, 2004

Citation
Gerard Wysocki, Matt McCurdy, Stephen So, Damien Weidmann, Chad Roller, Robert F. Curl, and Frank K. Tittel, "Pulsed quantum-cascade laser-based sensor for trace-gas detection of carbonyl sulfide," Appl. Opt. 43, 6040-6046 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-32-6040

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