Absorption measurements for highly sensitive diode laser of CO2 near 1.3μm at room temperature

Absorption measurements for highly sensitive

diode laser of CO2 near 1.3μm at room

temperature

Shao Jie;Zhang Wei-Jun;Gao Xiao-Ming;Ning Li-Xin;Yuan Yi-Qian

【期刊名称】《中国物理：英文版》 【年(卷),期】2005(014)003

【摘要】Fifteen new absorption lines were observed when studing CO2 absorption spectroscopy by wavelength modulation technique with a distributed feedback lase. The overtone spectra of CO2 around 1.3μm and the corresponding spectral parameters (i.e. positions, intensities, self-broadening coefficients) are presented. The intensity of the weakest line detected is 2.25163×-27cm-1/(molecule·cm-2) at the pressure of 667Pa, with a corresponding absorption of 3.88×10-8. 【总页数】5页(482-486)

【关键词】absorption spectroscopy;wavelength modulation;harmonic detection

【作者】Shao Jie;Zhang Wei-Jun;Gao Xiao-Ming;Ning Li-Xin;Yuan Yi-Qian

【作者单位】Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;Environmental Spectroscopy Laboratory, Anhui Institute of Optics and

Fine

Mechanics,

Chinese

Academy

of

Sciences,

Hefei