1.31微米附近二氧化碳的高灵敏度可调谐二极管激光吸收光谱法

[Highly sensitive tunable diode laser absorption spectroscopy of CO2 around 1.31 microm].

作者信息

Shao Jie, Gao Xiao-Ming, Yang Yong, Huang Wei, Pei Shi-Xin, Yuan Yi-Qian, Zhou Shi-Kang, Zhang Wei-Jun

机构信息

Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2006 Feb;26(2):213-7.

PMID:16826889

Abstract

Fifteen new absorption lines were observed when studying CO2 absorption spectroscopy by wavelength modulation (WM) technique with a DFB laser. The line intensity we can detect is 2.251 63 x 10(-27) cm(-1) x (moleculecm(-2))(-1) at 6.67 x 10(2) Pa pressure, corresponding to an absorbance of 3. 88 x 10(-8). The overtone spectra of CO2 around 1.31 microm have been measured with a tunable diode laser and the corresponding spectral parameters (positions, intensities, and self-broadening coefficients) are presented.

摘要

采用分布反馈（DFB）激光器，通过波长调制（WM）技术研究二氧化碳吸收光谱时，观测到了15条新的吸收线。在6.67×10²帕的压力下，我们能够检测到的谱线强度为2.251 63×10⁻²⁷厘米⁻¹×（分子·厘米⁻²）⁻¹，对应的吸光度为3.88×10⁻⁸。利用可调谐二极管激光器测量了二氧化碳在1.31微米附近的泛音光谱，并给出了相应的光谱参数（位置、强度和自展宽系数）。