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Proceedings Paper

High sensitivity absorption spectroscopy of CH4 around 1.31 µm
Author(s): Jie Shao; Xiaoming Gao; Yong Yang; Wei Huang; Shixing Pei; Yiqian Yuan; Weijun Zhang
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Paper Abstract

The absorption spectra of CH4 around 1.31 μm have been observed by wavelength modulation absorption spectroscopy technique employed with a tunable diode laser at different pressure. The overtone spectra of CH4 around 1.31 μm and the corresponding spectral parameters (i.e. positions intensities self-broadening coefficients) are presented. The intensity of the weakest line detected is 1.306x10-26 cm-1/(molecule-cm-2) at the pressure of 0.077 Torr with a corresponding absorption of l.174x10-7.

Paper Details

Date Published: 12 May 2005
PDF: 8 pages
Proc. SPIE 5832, Optical Technologies for Atmospheric, Ocean, and Environmental Studies, (12 May 2005); doi: 10.1117/12.619866
Show Author Affiliations
Jie Shao, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Xiaoming Gao, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Yong Yang, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Wei Huang, Anhui Institute of Optics and Fine Mechanics, CASAnhui Institute of Optics and Fine Mechanics, CAS (China)
Shixing Pei, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Yiqian Yuan, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Weijun Zhang, Anhui Institute of Optics and Fine Mechanics, CAS (China)


Published in SPIE Proceedings Vol. 5832:
Optical Technologies for Atmospheric, Ocean, and Environmental Studies
Daren Lu; Gennadii G. Matvienko, Editor(s)

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