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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 33 — Nov. 20, 2007
  • pp: 8202–8210

Dual interband cascade laser based trace-gas sensor for environmental monitoring

Gerard Wysocki, Yury Bakhirkin, Stephen So, Frank K. Tittel, Cory J. Hill, Rui Q. Yang, and Matthew P. Fraser  »View Author Affiliations

Applied Optics, Vol. 46, Issue 33, pp. 8202-8210 (2007)

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The development of an interband cascade laser (ICL) based spectroscopic trace-gas sensor for the simultaneous detection of two atmospheric trace gases is reported. The sensor performance was evaluated using two ICLs capable of targeting formaldehyde ( H 2 CO ) and ethane ( C 2 H 6 ) . Minimum detection limits of 3.5   ppbV for H 2 CO and 150   pptV for C 2 H 6 was demonstrated with a 1   s integration time. The sensor was deployed for field measurements of H 2 CO , and laboratory quantification of both formaldehyde and ethane are reported. A cross comparison of the atmospheric concentration data for H 2 CO with data collected by a collocated commercial H 2 CO sensor employing Hantzsch reaction based fluorometric detection was performed. These results show excellent agreement between these two different approaches for trace-gas quantification. In addition, laboratory experiments for dual gas quantification show accurate, fast response with no crosstalk between the two gas channels.

© 2007 Optical Society of America

OCIS Codes
(280.1120) Remote sensing and sensors : Air pollution monitoring
(280.3420) Remote sensing and sensors : Laser sensors
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6360) Spectroscopy : Spectroscopy, laser

ToC Category:
Remote Sensing and Sensors

Original Manuscript: July 18, 2007
Manuscript Accepted: September 27, 2007
Published: November 19, 2007

Gerard Wysocki, Yury Bakhirkin, Stephen So, Frank K. Tittel, Cory J. Hill, Rui Q. Yang, and Matthew P. Fraser, "Dual interband cascade laser based trace-gas sensor for environmental monitoring," Appl. Opt. 46, 8202-8210 (2007)

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