研究自适应光学元件——能动分块反射镜在激光相干合成中对光束平移相位差的校正性能。实验采用信号发生器产生正弦电压经过放大后在分块反射镜上产生平移扰动,通过高速CCD探测远场具有平移扰动的光斑,利用高速数字电路对CCD数据进行实时处理输出闭环反馈电压用于校正平移扰动。实验针对不同频率的扰动信号进行了闭环控制。结果表明,系统可以对频率为50 Hz以下并且振幅大于一个波长的平移相位差扰动进行有效的补偿,在50 Hz扰动下,系统合成效率可达75%。 The adaptive performance of the adaptive optics-active block mirror for phase shift of beam translation in laser coherent synthesis is studied. The experiment uses the signal generator to generate the sinusoidal voltage and then translates the perturbation on the segmented mirror after amplification. The high-speed CCD is used to detect the far-field perturbation spot and the high-speed digital circuit to process the CCD data in real time. The output closed-loop feedback voltage is used to correct Panning disturbance. Experiments for different frequency disturbance signals were closed-loop control. The results show that the system can effectively compensate the translational phase difference disturbance with the frequency less than 50 Hz and the amplitude more than one wavelength, and the system synthesis efficiency can reach 75% under the disturbance of 50 Hz.