详细介绍了固体板条MOPA激光系统输出光束特性，包括光束近场强度分布、波前畸变空间特性和时间频率特性等，并以此为设计输入，研制了大动态范围高空间分辨率变形镜。研制的自适应光学闭环校正系统在强光条件下，实现了全程闭环控制，光束质量β因子平均值从开环7.4提高到4.06。根据当前波前闭环校正残差，提出了进一步提高MOPA系统输出光束质量的方法。

This paper introduces the beam characteristics of the MOPA slab laser system, including nearfield intensity distribution, spatial character and temporal frequency of wavefront distortion. The deformable mirror with large dynamic range and high spatial resolution was developed. The adaptive optics closedloop correction system was designed to complete the closedloop control of the whole propagation process of high power beams. The value of β of beam quality has been improved from 7.4 to 4.06. According to the residual error of the closedloop wavefront correction, the beam quality of the MOPA might be further improved.