Accurate measurement of aerosol optical properties using the multilongitudinal mode high-spectral-resolution lidar with self-tuning Mach-Zehnder interferometer  

作　　者：高飞 高丰佳 杨潇 李改盼 杨帆 李仕春 汪丽 华灯鑫 Samo Stanič Fei Gao;Fengjia Gao;Xiao Yang;Gaipan Li;Fan Yang;Shichun Li;Li Wang;Dengxin Hua;Samo Stanič(School of Mechanical and Precision Instrument Engineering,Xi'an University of Technology,Xi'an 710048,China;Center for Atmospheric Research,University of Nova Gorica,SI-5000 Nova Gorica,Slovenia)

机构地区：[1]School of Mechanical and Precision Instrument Engineering,Xi'an University of Technology,Xi'an 710048,China [2]Center for Atmospheric Research,University of Nova Gorica,SI-5000 Nova Gorica,Slovenia

出　　处：《Chinese Optics Letters》2023年第3期1-7,共7页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.42175149 and 41775035);the China-CEEC Joint Higher Education Project(No.202017);the Natural Science Foundation of Shaanxi Province,China(No.2020JM-445)。

摘　　要：The multilongitudinal mode[MLM]high-spectral-resolution lidar[HSRL]based on the Mach±Zehnder interferometer[MZI]is constructed in Xi’an for accurate measurements of aerosol optical properties.The critical requirement of the optimal match between the free spectral range of MZI and the longitudinal mode interval of the MLM laser is influenced by the laboratory temperature,pressure,and vibration.To realize the optimal separation of aerosol Mie scattering signals and molecular Rayleigh scattering signals excited by the MLM laser,a self-tuning technique to dynamically adjust the optical path difference[OPD]of the MZI is proposed,which utilizes the maximum ratio between the received power of the Mie channel and Rayleigh channel as the criterion of the OPD displacement.The preliminary experiments show the feasibility of the MLM-HSRL with self-tuning MZI and the stable performance in the separation of aerosol Mie scattering signals and molecular Rayleigh scattering signals.

关 键 词：high-spectral-resolution lidar aerosol optical properties multilongitudinal mode laser self-tuning Mach±Zehnder interferometer 

分 类 号：TN958.98[电子电信—信号与信息处理]