摘要
分析了理想无波像差条件下和有随机波像差条件下光束漂移误差与长曝光光斑光束质量β因子的关系,得出光束漂移误差与长曝光光斑的光束质量β因子的关系。理论分析和数值仿真结果显示,光束漂移误差对长曝光光斑的光束质量β因子的影响与无光束漂移误差时系统初始光束质量无关,而与光束质量β因子的评价标准和光学系统中心遮拦比有关。分析了实际应用场景下对光束漂移误差的要求,指出对长曝光光斑光束质量的要求越高,允许的光束漂移误差越小。
The relationship between the beam excursion error and the beam quality β factor of long-term exposure spot was analyzed with and without random wavefront error. The formula to calculate the beam quality β factor of long-term exposure spot with beam excursion error was given. The theoretic analysis and the numerical calculation results indicate that beam quality affected by beam excursion error was independent of the beam quality without beam excursion error, but relative to the criterion of the beam quality β factor and the obstructed ratio of optics system. The beam excursion error request in application was analyzed. The results indicate that the better the beam quality wanted, the smaller the beam excursion error needed.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2007年第6期809-813,共5页
Chinese Journal of Lasers
关键词
激光技术
光束传输
光束质量β因子
光束漂移误差
长曝光光斑
高斯函数
laser technique
beam transfer
beam quality β factor
beam excursion error
long-terrn exposure spot
Gaussian function
作者简介
叶红卫(1972-),男,河北人,助理研究员,博士研究生,主要从事自适应光学、大气光学等方面的理论和应用研究。E-mail:YHW0310@126.com
导师:李新阳(1971-),男,博士,研究员,主要从事自适应光学、大气光学等方面的研究。E-mail:xyli@ioe.ac.cn