Rapidly swept continuous-wave cavity-ringdown spectroscopy

Brian J. Orr; Yabai He

doi:10.1016/j.cplett.2011.05.052

Rapidly swept continuous-wave cavity-ringdown spectroscopy

Brian J. Orr^*, Yabai He

^*Corresponding author for this work

MQ Photonics Research Centre

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

Continuous-wave (cw) cavity-ringdown (CRD) spectroscopy provides a highly sensitive way to measure optical absorption by observing the decay rate of light from a high-finesse optical cavity containing the sample of interest (usually gas-phase molecules). In rapidly swept cw-CRD spectroscopy, optical build-up and subsequent ringdown decay are initiated by rapidly sweeping the cavity length or the wavelength of the monochromatic tunable cw laser radiation, thereby establishing and interrupting optical resonance between the laser light and the longitudinal-mode frequencies of the cavity. We review the experimental methodology and applications of this technique, indicating its advantages and prospects for spectroscopic sensing.

Original language	English
Pages (from-to)	1-20
Number of pages	20
Journal	Chemical Physics Letters
Volume	512
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2011.05.052
Publication status	Published - 16 Aug 2011

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10.1016/j.cplett.2011.05.052

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AB - Continuous-wave (cw) cavity-ringdown (CRD) spectroscopy provides a highly sensitive way to measure optical absorption by observing the decay rate of light from a high-finesse optical cavity containing the sample of interest (usually gas-phase molecules). In rapidly swept cw-CRD spectroscopy, optical build-up and subsequent ringdown decay are initiated by rapidly sweeping the cavity length or the wavelength of the monochromatic tunable cw laser radiation, thereby establishing and interrupting optical resonance between the laser light and the longitudinal-mode frequencies of the cavity. We review the experimental methodology and applications of this technique, indicating its advantages and prospects for spectroscopic sensing.

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Rapidly swept continuous-wave cavity-ringdown spectroscopy

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