Highly Sensitive Tunable Diode Laser Absorption Spectroscopy of CO2 Around 1.57μm

Shao Jie ¹ Gao Xiaoming ¹ Zhang Weijun ² Yuan Yiqian ¹ Yang Yong ² Pei Shixin ²

文摘	The absolute absorption spectrum intensities of carbon dioxide samples has been recorded with a tunable diode laser spectrometer in the spectral range 6350--6364cm-1, which is suitable for the in-situ sensing of carbon dioxide in the lower stratosphere studied using a commercial telecommunication-type diode laser. It was found that the typical uncertainty of experimental line intensities is about 1% compared with the values listed in the HITRAN database, which are calculated by direct numerical diagonalization. The intensity of the weakest line we detected in this experiment is 1.116×10-26cm-1/(molecule.cm-2) at the pressure of 0.5 Torr, and the corresponding absorption is 3.2×10-6 with SNR of 4.53.
来源	Chinese Physics Letters ,2005,22(1):57-60 【核心库】
DOI	10.1088/0256-307x/22/1/017
关键词	可调二极管激光器 ; 吸收光谱 ; 二氧化碳 ; 分光计
地址	1. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Laboratory of Atmospheric Optics, CAS, 安徽, Hefei, 230031 2. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Environmental Spectroscopy Laboratory, CAS, 安徽, Hefei, 230031
语种	英文
文献类型	研究性论文
ISSN	0256-307X
学科	物理学
基金	国家863计划
文献收藏号	CSCD:1877081