摘要
针对激光近炸引信的小型化激光发射系统中激光光斑过大、探测距离偏近的问题,该文在分析半导体激光器的发射光束特性和脉冲激光定距性能的基础上,设计了激光定距系统的发射透镜,使得激光光束得到准直整形。仿真结果表明,准直后的激光束发散角被压缩至1.5m rad,且远场光斑呈圆对称形状,中心辐照亮度增加到41.04 W/cm2,使原有小型低功耗的系统探测距离从8 m提高到21 m。
This paper investigates the problems of the big laser spot and close detection range in the miniaturization laser emission system of the proximity fuze.By discussing and analyzing the characteristics of the emitting beam of the semiconductor laser as well as the pulsed laser ranging performance,the transmitting lens of the laser ranging-finder is designed to shape the laser beam.The simulation results indicate that the laser beam divergence is compressed to 1.5 mrad,the far field spot is a circular symmetry shape and the peak irradiance increases to 41.04 W/cm2 after collimation.The optic collimation system significantly improves the detection range of the miniature low-power system from 8 m to 21 m.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2010年第5期592-595,601,共5页
Journal of Nanjing University of Science and Technology
基金
国家部委基金(9140A05010610BQ02)
关键词
激光近炸引信
脉冲激光光斑
整形方法
准直系统
透镜组
laser proximity fuzes
pulsed laser spots
shaping methods
collimation systems
lens groups
