国外差分吸收激光雷达探测大气CO2研究综述  

Review of measurement for atmospheric CO_2 differential absorption lidar

作　　者：洪光烈[1] 章桦萍 刘豪[1] 胡以华[3] Hong Guanglie1, Zhang Huaping2, Liu Hao1, Hu Yihua3(1Key Laboratory of Space Active Opto-Electronics Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; 2University of Chinese Academy of Sciences, Beijing 100049, China; 3The Key Laboratory Pulse Power Laser Technology of China, Hefei, Anhui 230037, Chin)

机构地区：[1]中国科学院上海技术物理研究所,中国科学院空间主动光电技术重点实验室,上海200083 [2]中国科学院大学,北京100049 [3]脉冲功率激光技术国家重点实验室,安徽合肥230037

出　　处：《光电工程》2018年第1期1-14,共14页Opto-Electronic Engineering

基　　金：国家重点研发计划“京津冀城市群高时空分辨率碳排放监测及应用示范”(2017YFB0504000)

摘　　要：差分吸收激光雷达是探测大气CO_2时间和空间分布不可或缺的工具。2.0μm波段Ho:Tm:YLF或Ho:Tm:LuLiF激光器复合外差接收机,1.6μm种子注入的KTP光参量振荡器或参量发生器复合光电倍增管的光子计数技术,可以探测7 km以下对流层大气CO_2混合比的分布。调制连续波种子激光强度、共用1.6μm光纤放大器,以及相关检测技术的使用,积分路径差分吸收激光雷达在大气CO_2柱浓度探测方面具有独特的优点和特色。探测大气二氧化碳柱浓度的空间计划有美国NASA的ASENDS计划,采用脉冲式、积分路径差分吸收工作方式。用CO_2气体吸收池作为参照物,稳定种子光频率和精确控制谐振腔长,锁定发射机的on光源波长,是差分吸收激光雷达探测大气二氧化碳的关键技术。Differential absorption lidar is an indispensable tool to measure atmospheric CO2 for temporal and spatial distribution.The 2.0 μm wavelength Ho：Tm：YLF/Ho：Tm：Lu Li F lidar were used for remote sensing atmospheric CO2 with heterodyne receiver.The KTP parametric oscillator was injected into the seeds,and a differential absorption lidar（DIAL） system of 1.6 μm by using the photon counting technique to profile the atmospheric CO2 in the troposphere under 7 km.Modulation continuous wave seed laser intensity and the integral path differential absorption lidar,common 1.6 μm optical fiber amplifier,and the use of correlation detection technique,have unique advantages and characteristics in the detection of atmospheric CO2 column concentrations.The space program for detecting atmospheric CO2 column concentrations is NASA＇s ASENDS（active sensing of CO2 emission over nights,days,and seasons） mission which adopts the method of pulse and integral path differential absorption.The absorption of CO2 gas cell as a reference to stabilize seed light frequency and the precise control of cavity length lock the on-line wavelength of transmitter,is the key technique for DIAL to measure atmospheric CO2.

关 键 词：激光雷达 差分吸收激光雷达 二氧化碳 体积混合比 

分 类 号：TN959.98[电子电信—信号与信息处理]