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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 12 — Apr. 20, 2009
  • pp: 2344–2349

Precise wavelength calibration in continuous-wave cavity ringdown spectroscopy based on the HITRAN database

Zhongqi Tan, Xingwu Long, Jie Yuan, Yun Huang, and Bin Zhang  »View Author Affiliations


Applied Optics, Vol. 48, Issue 12, pp. 2344-2349 (2009)
http://dx.doi.org/10.1364/AO.48.002344


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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 μm ( 6594 cm 1 ) distributed feedback (DFB) laser diode as the light source and a 25 cm long glass ceramic as the cavity in which to demonstrate the method. A wavelength precision of 0.8 × 10 3 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

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.5960) Lasers and laser optics : Semiconductor lasers
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6390) Spectroscopy : Spectroscopy, molecular

ToC Category:
Spectroscopy

History
Original Manuscript: December 1, 2008
Revised Manuscript: March 9, 2009
Manuscript Accepted: March 25, 2009
Published: April 15, 2009

Citation
Zhongqi Tan, Xingwu Long, Jie Yuan, Yun Huang, and Bin Zhang, "Precise wavelength calibration in continuous-wave cavity ringdown spectroscopy based on the HITRAN database," Appl. Opt. 48, 2344-2349 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-12-2344

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