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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 6 — Feb. 20, 2010
  • pp: 945–949

Detection of benzene and toluene gases using a midinfrared continuous-wave external cavity quantum cascade laser at atmospheric pressure

Ihor Sydoryk, Alan Lim, Wolfgang Jäger, John Tulip, and Matthew T. Parsons  »View Author Affiliations


Applied Optics, Vol. 49, Issue 6, pp. 945-949 (2010)
http://dx.doi.org/10.1364/AO.49.000945


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Abstract

We demonstrate the application of a commercially available widely tunable continuous-wave external cavity quantum cascade laser as a spectroscopic source for the simultaneous detection of multiple gases. We measured broad absorption features of benzene and toluene between 1012 and 1063 cm 1 (9.88 and 9.41 μm ) at atmospheric pressure using an astigmatic Herriott multipass cell. Our results show experimental detection limits of 0.26 and 0.41 ppm for benzene and toluene, respectively, with a 100 m path length for these two gases.

© 2010 Optical Society of America

OCIS Codes
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6340) Spectroscopy : Spectroscopy, infrared
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: November 2, 2009
Manuscript Accepted: December 26, 2009
Published: February 10, 2010

Citation
Ihor Sydoryk, Alan Lim, Wolfgang Jäger, John Tulip, and Matthew T. Parsons, "Detection of benzene and toluene gases using a midinfrared continuous-wave external cavity quantum cascade laser at atmospheric pressure," Appl. Opt. 49, 945-949 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-6-945

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