高能激光束能量高,波长较长,无法用常规的光电探测器进行接收。为了实现高能激光发射系统中激光束的监测和系统的快速高精度装调,采用间接测量的方法,将激光束的监测转换为激光谐振腔出射镜的监测,并且通过使用光路切换镜,用He-Ne激光束代替高能激光束来完成整个系统的装调。对光束监测系统、装调辅助系统、靶标镜以及光路切换镜等辅助设备的工作原理和使用方法做了简单的介绍。为考察方法的有效性,结合CO₂激光发射系统进行了精度分析。结果表明,使用本方法装调后,光轴平行度误差可达到15.9″,满足设计指标的20″。

The conventional photoelectric detector can not get the laser signal because of the laser’s high energy and long wavelength.To achieve the goal of real-time monitoring the laser beam and fast aligning the high-energy laser launching system accurately,we monitored the output mirror of laser resonator to supersede the laser beam in this paper.In the same way,with a right-angle reflector,the launching system was aligned using the He-Ne laser of beam monitoring system instead of high-energy laser.In the end,the precision of the CO₂ laser launching system was analyzed to inspect the method.The analysis results show that the parallelism errors can reach 15.9″,which satisfies the requirement of system.