Absorption measurements for highly sensitive diode laser of CO2 near 1.3μm at room temperature
Shao Jie (邵杰)ab, Zhang Wei-Jun (张为俊)b, Gao Xiao-Ming (高晓明)ab, Ning Li-Xin (宁利新)b, Yuan Yi-Qian (袁怿谦)a
a Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; b Environmental Spectroscopy Laboratory, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
Abstract Fifteen new absorption lines were observed when studying CO2 absorption spectroscopy by wavelength modulation technique with a distributed feedback laser. The overtone spectra of CO2 around 1.31μm and the corresponding spectral parameters (i.e. positions, intensities, self-broadening coefficients) are presented. The intensity of the weakest line detected is 2.25163×10-27cm-1/(molecule·cm-2) at the pressure of 667Pa, with a corresponding absorption of 3.88×10-8.
Received: 10 August 2004
Revised: 06 September 2004
Accepted manuscript online:
Fund: Project supported by the National High Technology Development Programme of China (Grant No 2002AA825100).
Cite this article:
Shao Jie (邵杰), Zhang Wei-Jun (张为俊), Gao Xiao-Ming (高晓明), Ning Li-Xin (宁利新), Yuan Yi-Qian (袁怿谦) Absorption measurements for highly sensitive diode laser of CO2 near 1.3μm at room temperature 2005 Chinese Physics 14 482
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