Pilot study of optical design in off-axis and multi-pass amplification systems

By analyzing the optical design in the off-axis and multi-pass amplification system, and combining the application in the three high power solid laser facilities, it is indicated that avoiding the ghost image damage and controlling the system aberration are important in the optical design of similar facilities. The key for the optical design is confirming the F number of lens, and making the system aberration least by transforming the curvature of lens and the degree of lens tilt in the case of no ghost image damager. This work could provide guidance for the optical design in similar systems.