新型遥感探测系统--白光激光雷达  

New remote sensing system:White-light Lidar

作　　者：张立文[1,2] 林晨[1,2] 辛立[1,2] 高军毅[1] 

机构地区：[1]中国科学院武汉物理与数学研究所,武汉430071 [2]中国科学院研究生院,北京100039

出　　处：《强激光与粒子束》2008年第10期1603-1607,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(10475110);中国科学院科研装备研制和改造项目(Y2004019)

摘　　要：设计了一种新型的大气遥感探测系统——自光激光雷达，发展了一种雷达模式的宽谱范围长程差分吸收光谱探测方法。介绍了白光激光雷达系统结构和时间分辨光谱探测技术；阐述了飞秒激光在大气中自导光丝传输和产生的超连续白光的特性；利用该自光激光雷达系统对大气中氧气成分在685～694nm和759--769nm范围的长程差分吸收光谱进行了探测，并与Hitran数据库拟合计算的标准值进行比对，结果一致，验证了白光激光雷达遥感探测系统的正确性和实验方法的可行性。A new atmospheric remote sensing detection system, White-light Lidar, was designed and a d.etection method based on radar mode of long-path differential absorption spectra was developed. The main structure of the White-light Lidar and time-resolved spectrum detecting technology were introduced. The feature of the femtosecond laser pulses propagating for filament formation in atmosphere and white-light supercontinuum were expounded. Using the White-light Lidar system, the long-path dif- ferential absorption spectra of oxygen molecules in the range of 685-694 nm and 759-769 nm were detected. The measured results are in good agreement with the fitted spectra of Hitran database, which indicates the correctness of the remote sensing detection system of White-light Lidar and the feasibility of the experimental method.

关 键 词：大气遥感探测 白光激光雷达 时间分辨光谱探测 超连续白光 后向散射增强 

分 类 号：TN958[电子电信—信号与信息处理]