Cavity ringdown spectroscopy with a continuous-wave laser: Calculation of coupling efficiency and a new spectrometer design

Jae Won Hahn; Yong Shim Yoo; Jae Yong Lee; Jae Wan Kim; Hai Woong Lee

doi:10.1364/AO.38.001859

Cavity ringdown spectroscopy with a continuous-wave laser: Calculation of coupling efficiency and a new spectrometer design

Jae Won Hahn, Yong Shim Yoo, Jae Yong Lee, Jae Wan Kim, Hai Woong Lee

Department of Mechanical Engineering

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

70 Citations (Scopus)

Abstract

For the efficient operation of a cavity ringdown spectroscopy (CRDS) system utilized with a continuouswave (cw) laser, we numerically analyze the coupling efficiency of a cw laser to a ringdown cavity in terms of changes in the scanning rate, the laser linewidth, and the mirror reflectivity. We also demonstrate a new simple design for a CRDS system that can produce a CRDS signal with only a piezoelectric transducer (PZT), without the acousto-optic modulator that is usually adopted to switch off the cw laser beam that enters the cavity. Furthermore, we investigate the feasibility of the cw CRDS technique with a fast-scanning PZT by recording a CRDS spectrum of acetylene overtones. The detection sensitivity that corresponds to the noise-equivalent absorption is found to be -3 × 10^−-9/cm.

Original language	English
Pages (from-to)	1859-1866
Number of pages	8
Journal	Applied Optics
Volume	38
Issue number	9
DOIs	https://doi.org/10.1364/AO.38.001859
Publication status	Published - 1999 Mar 20

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.38.001859

Cite this

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title = "Cavity ringdown spectroscopy with a continuous-wave laser: Calculation of coupling efficiency and a new spectrometer design",

abstract = "For the efficient operation of a cavity ringdown spectroscopy (CRDS) system utilized with a continuouswave (cw) laser, we numerically analyze the coupling efficiency of a cw laser to a ringdown cavity in terms of changes in the scanning rate, the laser linewidth, and the mirror reflectivity. We also demonstrate a new simple design for a CRDS system that can produce a CRDS signal with only a piezoelectric transducer (PZT), without the acousto-optic modulator that is usually adopted to switch off the cw laser beam that enters the cavity. Furthermore, we investigate the feasibility of the cw CRDS technique with a fast-scanning PZT by recording a CRDS spectrum of acetylene overtones. The detection sensitivity that corresponds to the noise-equivalent absorption is found to be -3 × 10−-9/cm.",

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AU - Won Hahn, Jae

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AU - Yong Lee, Jae

AU - Wan Kim, Jae

AU - Woong Lee, Hai

PY - 1999/3/20

Y1 - 1999/3/20

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AB - For the efficient operation of a cavity ringdown spectroscopy (CRDS) system utilized with a continuouswave (cw) laser, we numerically analyze the coupling efficiency of a cw laser to a ringdown cavity in terms of changes in the scanning rate, the laser linewidth, and the mirror reflectivity. We also demonstrate a new simple design for a CRDS system that can produce a CRDS signal with only a piezoelectric transducer (PZT), without the acousto-optic modulator that is usually adopted to switch off the cw laser beam that enters the cavity. Furthermore, we investigate the feasibility of the cw CRDS technique with a fast-scanning PZT by recording a CRDS spectrum of acetylene overtones. The detection sensitivity that corresponds to the noise-equivalent absorption is found to be -3 × 10−-9/cm.

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Cavity ringdown spectroscopy with a continuous-wave laser: Calculation of coupling efficiency and a new spectrometer design

Abstract

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