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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 19 — Sep. 13, 2010
  • pp: 20059–20071

Simultaneous multi-laser, multi-species trace- level sensing of gas mixtures by rapidly swept continuous-wave cavity-ringdown spectroscopy

Yabai He, Ruifeng Kan, Florian V. Englich, Wenqing Liu, and Brian J. Orr  »View Author Affiliations

Optics Express, Vol. 18, Issue 19, pp. 20059-20071 (2010)

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The greenhouse-gas molecules CO2, CH4, and H2O are detected in air within a few ms by a novel cavity-ringdown laser-absorption spectroscopy technique using a rapidly swept optical cavity and multi-wavelength coherent radiation from a set of pre-tuned near-infrared diode lasers. The performance of various types of tunable diode laser, on which this technique depends, is evaluated. Our instrument is both sensitive and compact, as needed for reliable environmental monitoring with high absolute accuracy to detect trace concentrations of greenhouse gases in outdoor air.

© 2010 OSA

ToC Category:

Original Manuscript: July 22, 2010
Revised Manuscript: August 31, 2010
Manuscript Accepted: August 31, 2010
Published: September 3, 2010

Yabai He, Ruifeng Kan, Florian V. Englich, Wenqing Liu, and Brian J. Orr, "Simultaneous multi-laser, multi-species trace-level sensing of gas mixtures by rapidly swept continuous-wave cavity-ringdown spectroscopy," Opt. Express 18, 20059-20071 (2010)

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