中国物理B ›› 2005, Vol. 14 ›› Issue (3): 482-486.doi: 10.1088/1009-1963/14/3/009

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

张为俊1, 宁利新1, 袁怿谦2, 邵杰3, 高晓明3   

  1. (1)Environmental Spectroscopy Laboratory, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; (2)Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; (3)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 23003
  • 收稿日期:2004-08-10 修回日期:2004-09-06 出版日期:2005-03-02 发布日期:2005-03-02
  • 基金资助:
    Project supported by the National High Technology Development Programme of China (Grant No 2002AA825100).

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    

  1. 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
  • Received:2004-08-10 Revised:2004-09-06 Online:2005-03-02 Published:2005-03-02
  • Supported by:
    Project supported by the National High Technology Development Programme of China (Grant No 2002AA825100).

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摘要： 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.

关键词: absorption spectroscopy, wavelength modulation, harmonic detection

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.

Key words: absorption spectroscopy, wavelength modulation, harmonic detection

中图分类号:  (Semiconductor lasers; laser diodes)

  • 42.55.Px
42.60.By (Design of specific laser systems) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 42.60.Fc (Modulation, tuning, and mode locking)