Abstract

We describe the wavelength calibration method of a narrowband laser diode in continuous-wave (CW) cavity ringdown spectroscopy (CRDS). The method uses known spectral lines as wavelength markers to calibrate and refine the wavelength-current relation of laser diodes, and their spectral positions are taken directly from the HITRAN 2004 database. We built a compact CW CRDS apparatus with a $1.517\mathrm{\mu m}$ ($\sim 6594{\mathrm{cm}}^{-1}$) distributed feedback (DFB) laser diode as the light source and a $25\mathrm{cm}$ long glass ceramic as the cavity in which to demonstrate the method. A wavelength precision of $\sim 0.8\times {10}^{-3}{\mathrm{cm}}^{-1}$ was obtained by comparing the HITRAN 2004 database, which was approximately four times more precise than that of the conventional method.

© 2009 Optical Society of America

Periodically locked continuous-wave cavity ringdown spectroscopy

Nicola J. van Leeuwen, Jan C. Diettrich, and Andrew C. Wilson
Appl. Opt. 42(18) 3670-3677 (2003)

Uncertainty analysis of absolute concentration measurement with continuous-wave cavity ringdown spectroscopy

Jae Wan Kim, Yong Shim Yoo, Jae Yong Lee, Jae Bong Lee, and Jae Won Hahn
Appl. Opt. 40(30) 5509-5516 (2001)

Continuous-wave cavity ringdown spectroscopy based on the control of cavity reflection

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)

Development of a multiple gas analyzer using cavity ringdown spectroscopy for use in advanced fire detection

Eric A. Fallows, Thomas G. Cleary, and J. Houston Miller
Appl. Opt. 48(4) 695-703 (2009)

Continuous-wave cavity ringdown absorption spectroscopy with a swept-frequency laser: rapid spectral sensing of gas-phase molecules

Yabai He and Brian J. Orr
Appl. Opt. 44(31) 6752-6761 (2005)