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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 11 — Jun. 1, 2010
  • pp: 1749–1751

Simultaneous detection of multiple-gas species by correlation spectroscopy using a multimode diode laser

X. T. Lou, G. Somesfalean, B. Chen, Y. G. Zhang, H. S. Wang, Z. G. Zhang, S. H. Wu, and Y. K. Qin  »View Author Affiliations

Optics Letters, Vol. 35, Issue 11, pp. 1749-1751 (2010)

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Simultaneous detection of multiple-gas species has for the first time (to our knowledge) been demonstrated by using a multimode diode-laser-based correlation spectroscopy (MDL-COSPEC) scheme. Concentration measurements of a mixture of CO 2 and CO gas were performed by probing overlapping line spectra around 1.57 μm using an MDL. Species identification and corresponding quantitive analysis were implemented by correlating the recorded absorption signals of the sample gas mixtures with those of the reference gases of particular interest, attaining accuracies of 2% and 1%, respectively. MDL-COSPEC is a generic technique with potential application for simultaneous detection of multiple gases having resolvable narrow lines.

© 2010 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3600) Lasers and laser optics : Lasers, tunable
(300.1030) Spectroscopy : Absorption
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6340) Spectroscopy : Spectroscopy, infrared

ToC Category:

Original Manuscript: January 25, 2010
Revised Manuscript: March 30, 2010
Manuscript Accepted: April 16, 2010
Published: May 17, 2010

X. T. Lou, G. Somesfalean, B. Chen, Y. G. Zhang, H. S. Wang, Z. G. Zhang, S. H. Wu, and Y. K. Qin, "Simultaneous detection of multiple-gas species by correlation spectroscopy using a multimode diode laser," Opt. Lett. 35, 1749-1751 (2010)

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