用于测风激光雷达的三通道法布里-珀罗标准具性能分析  

Performance of the Triple Fabry-Pérot Etalon for Wind Lidar

作　　者：舒志峰[1] 唐磊[1] 董吉辉[1] 沈法华[1] 孙东松[1] 窦贤康[2] CHA H K 

机构地区：[1]中国科学院安徽光学精密机械研究所,安徽合肥230031 [2]中国科学技术大学和空间科学学院,安徽合肥230026 [3]韩国原子能研究所量子光学实验室

出　　处：《光学学报》2010年第5期1332-1336,共5页Acta Optica Sinica

基　　金：国家863计划和安徽省国际科技合作项目(09080703032)资助课题

摘　　要：研制了用于瑞利散射多普勒激光雷达的三通道法布里-珀罗（Fabry-Pérot）标准具,采用He-Ne激光对其进行检测,利用产生的干涉图案检测了两个边缘通道的厚度差为74.70±2.24 nm,对应频谱间隔为5.05±0.07 GHz;锁定通道与其中一个边缘通道的厚度差为27.16±1.90 nm,对应频谱间隔为1.79±0.07 GHz。数值模拟结果表明：采用脉冲能量350 mJ波长355 nm、重复频率30 Hz的激光器和口径450 mm的望远镜,利用该标准具作为鉴频器,在0-40 km高度,瑞利散射多普勒激光雷达的径向风速测量误差小于2.53 m/s,测量精度比理论设计值2.94 m/s提高了约14.1%。A triple Fabry-Pérot etalon for wind lidar is developed.The relative thicknesses of the etalon measured by using the interference fringe with the He-Ne laser are 74.70±2.24 nm and 27.16±1.90 nm.The corresponding separation of two edges etalon and that between edge1 etalon and locking etalon are 5.05±0.07 GHz and 1.79±0.70 GHz,respectively.The etalon as a frequency discriminator,a laser with the push energy of 350 mJ at wavelength 355 nm,repetition frequency of 30 Hz and a telescope with the diameter of 450 mm are used） to simulate the wind lidar.As a result,the actual line-of-sight wind speed error is lower than 2.53 m/s,the accuracy of line-of-sight wind is improved by 14.1% compared with the theoretical value of 2.94 m/s at the altitude of 0~40 km.

关 键 词：分子散射 双边缘技术 测风激光雷达 法布里-珀罗标准具 干涉条纹 

分 类 号：TN958.98[电子电信—信号与信息处理]