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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 26 — Sep. 10, 2010
  • pp: 4906–4914

High sensitivity detection of NO 2 employing cavity ringdown spectroscopy and an external cavity continuously tunable quantum cascade laser

Gottipaty N. Rao and Andreas Karpf  »View Author Affiliations

Applied Optics, Vol. 49, Issue 26, pp. 4906-4914 (2010)

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A trace gas sensor for the detection of nitrogen dioxide based on cavity ringdown spectroscopy (CRDS) and a continuous wave external cavity tunable quantum cascade laser operating at room temperature has been designed, and its features and performance characteristics are reported. By measuring the ringdown times of the cavity at different concentrations of NO 2 , we report a sensitivity of 1.2 ppb for the detection of NO 2 in Zero Air.

© 2010 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(010.1120) Atmospheric and oceanic optics : Air pollution monitoring
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6360) Spectroscopy : Spectroscopy, laser
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: June 21, 2010
Revised Manuscript: August 3, 2010
Manuscript Accepted: August 6, 2010
Published: September 3, 2010

Virtual Issues
Vol. 5, Iss. 13 Virtual Journal for Biomedical Optics

Gottipaty N. Rao and Andreas Karpf, "High sensitivity detection of NO2 employing cavity ringdown spectroscopy and an external cavity continuously tunable quantum cascade laser," Appl. Opt. 49, 4906-4914 (2010)

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