设计并搭建了一种基于复合型液晶空间光调制器(LC-SLM)的自适应光学原理校正系统,其中一个空间光调制器用于波前模拟,另一个用于波前校正。利用Zygo干涉仪对畸变波前进行了检测,通过程序计算获得了畸变波前的共轭波前,产生了相应的灰度图,将其加载到LC-SLM以进行畸变波前补偿,实现了静态波前校正。计算得到的斯特列尔比由校正前的0.3795增大到0.8268,环围灰度平均值由校正前的382.75增大到1164.5,光斑亮度聚集情况明显改善。相比纯相位空间光调制器,复合型空间光调制器节约了成本,适合实验室批量使用。

A kind of adaptive optical principle correction system based on compound liquid crystal spatial light modulator (LC-SLM) is designed and built. One spatial light modulator is used for wavefront simulation and the other for wavefront correction. The Zygo interferometer is used to detect the distorted wavefront. The conjugate wavefront of the distorted wavefront is obtained by the program calculation, and the corresponding gray image is generated, which is loaded into the LC-SLM to compensate the distortion wavefront, and the static wavefront correction is realized. The calculated Stell-ratio increases from 0.3795 before correction to 0.8268, and the mean value of the ring girth gray increases from 382.75 before correction to 1164.5, and the luminance aggregation of the spot is obviously improved. Compared with the pure phase space light modulator, the composite space light modulator saves costs and is suitable for laboratory batch use.