二氧化氮差分吸收激光雷达拉曼激光源的优化研究  

Optimization of Raman laser recourse for NO_2-DIAL

作　　者：徐贲[1] 方达伟[1] 岳古明[2] 张寅超[2] 胡欢陵[2] 周军[2] 

机构地区：[1]中国计量学院光学与电子科技学院,浙江杭州310018 [2]中国科学院安徽光学精密机械研究所,安徽合肥230031

出　　处：《中国计量学院学报》2009年第1期84-88,共5页Journal of China Jiliang University

基　　金：国家质检总局科技计划项目(No.2005QK129);浙江省教育厅自然科学D类项目(No.20050371)

摘　　要：Nd:YAG三倍频激光(355nm)抽运高压CH4,获得其第一级斯托克斯光S1(395.60nm),作为NO2差分吸收激光雷达(NO2-DIAL)的激光源λon.通过增大激光脉冲宽度、改变拉曼池耦合透镜的焦距和气体压强等条件,获得了满足实际使用要求的转化效率高、稳定性好的395.60nm波长拉曼激光输出.该实验结果已应用于差分吸收激光雷达的NO2探测.By using a pulsed Nd：YAG laser at 355 nm to pump CH4 , the first Stokes laser of its S1（395.60 nm） was gained and used as Raman laser recourse λon of a differential absorption lidar（DIAL） system for NO2 measurement. By enlarging the duration of laser and adjusting the focal length of couple lens and the gas pressure of Raman cell, the Stokes scattering laser of 395.60 nm, which was characterized by high energy conversion efficiency and good stability, was obtained. The scattering laser has been successfully used as λon of a DIAL system to measure NO2

关 键 词：NO2-DIAL 受激拉曼散射 四波混频(FWM) 能量转化效率 能量稳定性 

分 类 号：O437.3[机械工程—光学工程]