Chinese Journal of Quantum Electronics ›› 2020, Vol. 37 ›› Issue (4): 497-505.

• Special Issue on Laser Propogation and Detection in Atmosphere • Previous Articles     Next Articles

Measurement of high-resolution total atmospheric transmittance and retrieval of water vapor with laser heterodyne technology

HUANG Yinbo1;2, CAO Zhensong1;2∗, LU Xingji1;2, HUANG Jun1;3, LIU Qiang1;2, DAI Congming1;2, HUANG Honghua1;2, Zhu Wenyue1;2, RAO Ruizhong1;2, WANG Yingjian1;2   

  1. 1 Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2 Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China; 3 Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
  • Received:2020-05-15 Revised:2020-05-11 Published:2020-07-28 Online:2020-07-21

Abstract: The total atmospheric transmittance is an important parameter reflecting the optical properties of the whole atmosphere, which is of great significance in the study of laser atmospheric propagation, infrared radiative transfer and the engineering application of photoelectric systems. The measurement principle of laser heterodyne technology is introduced firstly, especially the principle and method of highresolution measurement of the total atmospheric transmittance by using laser heterodyne spectroscopy, as well as the method of simultaneous inversion of the profile distribution and column concentration of water vapor. Then the high-resolution laser heterodyne spectrometers at 4.5 m and 3.53 m band developed by our research group, with 0.006 cm−1 and 0.002 cm−1 spectral resolutions respectively, are introduced, and the typical measurement results of the total atmospheric transmittance, water vapor profile distribution and column concentration in Hefei area with the two devices are also presented. Finally, the future development of laser heterodyne technology in photo-electric systems engineering is prospected.

Key words: atmospheric optics, total atmospheric transmittance, concentration of water vapor, laser heterodyne technology

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