Study of mathematical model for auto-alignment in four-pass amplifier
四程放大自动准直系统数学模型研究

Beam automatic alignment system is used to implement beam adjustment. Basing on the principle of matrix optics, the mathematical model for auto-alignment in four-pass amplifier is built by analyzing the properties of this system. Using this model, the scheme of beam alignment is designed, and the analytical solutions of the amounts of near field adjustment and far field adjustment are obtained, respectively.