新型遥感探测系统——白光激光雷达
New remote sensing system: White-light Lidar
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摘要: 设计了一种新型的大气遥感探测系统——白光激光雷达，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；利用该白光激光雷达系统对大气中氧气成分在685~694 nm和759~769 nm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。Abstract: A new atmospheric remote sensing detection system, White-light Lidar, was designed and a detection 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 differential 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
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