Auto-collimation and monitoring of laser beam in high power electron-pumped KrF laser facility

Abstract

Heaven-I is a 100J high power KrF laser facility with six beams. The system is so huge and complex that manual adjustment is laborious and time-consuming. In order to ensure the accuracy of laser focusing and target physics experiments, the auto-collimation and monitoring systems were established for the pre-amplifier and six-beam focusing optical systems. The experimental results show that the auto-collimation systems have high positioning precision and fast time response. It greatly improve automation of optical adjustment for Heaven-I.