针对自适应高功率激光非稳腔，在建立整个自适应激光谐振腔系统的数学模型基础上，首次运用现代控制理论中的多变量频域分析法进行系统的动态特性研究，分析了闭环系统的稳定性、动态特性及关联性，同时提出了系统的重要参数之一——系统开环增益选择的限制条件.

In the paper, aimed at adaptive unstable laser resonator of high power laser, the mathematical model of the whole adaptive laser resonator system is set up. The computer simulation is made and the dynamic characteristics and stability of the closed loop system are analyzed by using the method of multivariable analysis in the frequency domain. Meanwhile, the limited condition of systematic gain which is one of the imporbot parameters of the system are put forward.