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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 8 — Apr. 18, 2005
  • pp: 2906–2915

High-speed cavity ringdown spectroscopy with increased spectral resolution by simultaneous laser and cavity tuning

I. Debecker, A. K. Mohamed, and D. Romanini  »View Author Affiliations

Optics Express, Vol. 13, Issue 8, pp. 2906-2915 (2005)

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Cavity ringdown spectroscopy is an efficient gas-sensing method, but improvement in measurement speed is required before this method can be applied to the analysis of fast phenomena. We present a new continuous-wave cavity ringdown design, involving fast tuning of the laser frequency and a rapidly swept optical cavity, to allow high-speed sensing with spectral resolution refinement. This approach, which provides a simple and versatile instrument, is investigated numerically and experimentally. By performing detection of a forbidden transition of molecular oxygen near 766 nm during a 2-ms single sweep of the laser frequency, we show that our system fulfils the requirements for probing rapid chemical processes.

© 2005 Optical Society of America

OCIS Codes
(280.3420) Remote sensing and sensors : Laser sensors
(300.6190) Spectroscopy : Spectrometers

ToC Category:
Research Papers

Original Manuscript: March 8, 2005
Revised Manuscript: March 30, 2005
Published: April 18, 2005

I. Debecker, A.K. Mohamed, and D. Romanini, "High-speed cavity ringdown spectroscopy with increased spectral resolution by simultaneous laser and cavity tuning," Opt. Express 13, 2906-2915 (2005)

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