云南天文台激光测距系统激光特性参数的测量分析  

The Measurement and Analysis of Laser Parameters of Yunnan Observatory SLR System

作　　者：伏红林[1] 冯和生[1] 张云成[1] 杨远贵[1] 

机构地区：[1]中国科学院国家天文台云南天文台,云南昆明650011

出　　处：《天文研究与技术》2004年第2期112-118,共7页Astronomical Research & Technology

摘　　要：通过激光光腰位置能量分布测量,在已知激光发散角的情况下,直接计算得到光腰半径、光束质量因子等重要参数,更加深入的分析了云台激光束情况,对于测距时激光发散角的控制具有重要意义。从激光能量分布的测量结果看,可把激光的最小发散角压缩到1″,达到大气视宁度水平,从而提高系统的极限测距能力。The beam factor and beam waist radius can be obtained by means of laser energy distribution measurement at the beam waist when the beam divergence angle is known.These parameters are very important for the beam divergence angle precise control.The result of the laser energy distribution measurement indicates that 1″ minimum laser beam divergence angle is available by means of change the beam expansion;thereby the maximum range capability of this system will be enhanced.

关 键 词：激光测距 非高斯轴对称激光束 激光能量分布 光腰半径 光束质量因子 

分 类 号：P129[天文地球—天体测量]