边界层臭氧差分吸收激光雷达  

Boundary layer ozone differential-absorption lidar

作　　者：曹开法[1] 黄见[1] 胡顺星[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室,安徽合肥230031

出　　处：《红外与激光工程》2015年第10期2912-2917,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(41205020;41127901)

摘　　要：差分吸收激光雷达是测量边界层臭氧空间分布的一种重要工具。研制了一台边界层臭氧差分吸收激光雷达系统,系统采用Nd：YAG四倍频激光266 nm泵浦H2/D2混合气体产生受激拉曼光作为光源,采用牛顿型望远镜接收大气回波,288.9 nm和299 nm的弹性散射信号被分成两路,被光电倍增管转换为电信号,然后通过A/D采集卡采集保存用以反演大气臭氧分布廓线。给出了系统的探测结果以及和臭氧探空仪地对比验证实验。结果显示该激光雷达可以大大降低几何因子的影响,提供0.2~2 km区间的边界层大气臭氧分布廓线。Differential absorption lidar is one of important tools for measurement of spatial distribution of ozone in boundary layer. A boundary layer ozone ＇differential absorption lidar system was developed. The stimulated Raman laser in HJD2 mixtures pumped by the frequency quadrupled Nd：YAG laser at 266 nm was adopted in lidar system. A new Newton telescope received the lidar atmospheric echo. The elastic scattering signals at 288.9 nm and 299 nm were divided into two channels and converted to electrical signals by photomultiplier. Finally the signals were collected by A/D acquisition card for inversion of atmospheric ozone distribution profile. Some ozone data results were given and comparison of ozone profiles between ozone lidar and ozonesonde was displayed. Results show that the influence of the geometrical factor is reduced greatly in the lidar system. Atmospheric ozone profiles from 0.2 km to 2 km can be provided reliably by the lidar system.

关 键 词：大气光学 激光雷达 差分吸收 臭氧 受激拉曼散射 

分 类 号：P407.2[天文地球—大气科学及气象学]