Spectroscopy and Spectral Analysis, Volume. 40, Issue 12, 3653(2020)

Detection of CO2 Average Concentration in Atmospheric Path by CW Modulated Differential Absorption Lidar

Guang-lie HONG1,1、*, Xin-dong LIANG1,1, Hao LIU1,1, Hua-ping ZHANG1,1, and Rong SHU1,1
Author Affiliations
  • 1[in Chinese]
  • 11. Key Laboratory of Space Active Optoelectronic Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
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    Figures & Tables(8)
    Comparison of absorption coefficients of H2O and CO2 at 1 570~1 574 nm
    Comparison of absorption coefficients of H2O and CO2 at 1 572.335 nm
    Continuous-wave modulation hard-target differential absorption lidar system
    Configuration of the wavelength locking unit for the On-line wavelength
    Measured On-line laser frequency stability
    The path of detection from Nov.6 to Nov.7, 2019, including Park, residential area and a main road
    CO2 column concentration by the DIAL system and that measured by the in situ sensor LI-7500 at Nov.6, 2019 to Nov.7, 2019
    • Table 1. System parameters of DIAL system

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      Table 1. System parameters of DIAL system

      参数
      激光器波长1 572.335 nm(On)
      1 572.180 nm(Off)
      激光器线宽(FWHM)<1 MHz
      波长稳定性0.1 pm(rms)(On)
      0.4 pm(rms)(Off)
      调制频率99.733 kHz(On)
      101.833 kHz(Off)
      输出光功率(平均)2 W
      望远镜口径150 mm
      视场角0.57 mrad
      探测器增益100
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    Guang-lie HONG, Xin-dong LIANG, Hao LIU, Hua-ping ZHANG, Rong SHU. Detection of CO2 Average Concentration in Atmospheric Path by CW Modulated Differential Absorption Lidar[J]. Spectroscopy and Spectral Analysis, 2020, 40(12): 3653

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    Paper Information

    Category: Research Articles

    Received: Sep. 18, 2019

    Accepted: --

    Published Online: Jun. 18, 2021

    The Author Email: Guang-lie HONG (glhong@mail.sitp.ac.cn)

    DOI:10.3964/j.issn.1000-0593(2020)12-3653-06

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