Abstract
For the efficient operation of a cavity ringdown spectroscopy (CRDS) system utilized with a continuous-wave (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.
© 1999 Optical Society of America
Full Article | PDF ArticleMore Like This
Nicola J. van Leeuwen, Jan C. Diettrich, and Andrew C. Wilson
Appl. Opt. 42(18) 3670-3677 (2003)
Zhixin Li, Weiguang Ma, Xiaofang Fu, Wei Tan, Gang Zhao, Lei Dong, Lei Zhang, Wangbao Yin, and Suotang Jia
Opt. Express 21(15) 17961-17971 (2013)
Christine R. Bucher, Kevin K. Lehmann, David F. Plusquellic, and Gerald T. Fraser
Appl. Opt. 39(18) 3154-3164 (2000)