Target and beam alignment unit is one of the core parts of high power laser drivers and plays a crucial role in the adjustment of target position and pose, the laser pointing and so on. Combined the alignment accuracy requirements of the laser driver with the physics experiment implement, basic functions of the target and beam alignment unit can be acquired to meet the requirements of physics experiments using the design and adjustment of the optical-mechanical-electronic systems. However, with the increasing number of the main lasers, slewing of multi-beams and positioning with high accuracy have become the goal of developing target and beam alignment unit. Present studies on the target and beam alignment unit of both domestic and international high power laser drivers are reviewed, a universal method for the alignment unit design is investigated and main issues in the development of the target and beam alignment unit are also analyzed.

靶定位瞄准单元是高功率激光驱动器的核心单元之一，承担靶位姿调整和激光瞄准等功能。结合装置定位瞄准精度要求以及物理方案的实施，通过光机电设计和调试可以实现靶定位瞄准单元的基本功能，满足高功率激光驱动器开展物理实验的要求。然而随着主激光路数的不断增多，多束激光的快速瞄准和高精度定位已成为发展靶定位瞄准单元的目标。综述了国内外高功率激光驱动器靶定位瞄准单元的研究现状，探讨了靶定位瞄准设计的普适性方法，并分析了靶定位瞄准单元发展过程中面临的主要问题。