An optically addressed liquid crystal modulator for wavefront control of 1053 nm laser beam is reported in this paper. Its working principle, control method and spatial phase modulation capability are mainly introduced. A new method of measuring the relationship between gray level and phase retardation is proposed. The rationality of the curve is further confirmed by designing special experiments. According to the curve, several spatial phase distributions have been realized by this home-made device. The results show that, not only the maximum phase retardation is larger than $2\unicode[STIX]{x03C0}$ for 1053 nm wavelength, but also the control accuracy is high. Compared with the liquid crystal on silicon type spatial light modulator, this kind of modulator has the advantages of generating smooth phase distribution and avoiding the black-matrix effect.

中文翻译：

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使用光学寻址液晶调制器的激光束波前控制

本文报道了一种用于 1053 nm 激光束波前控制的光学寻址液晶调制器。主要介绍了其工作原理、控制方法和空间相位调制能力。提出了一种测量灰度与相位延迟关系的新方法。通过设计特殊实验进一步证实了曲线的合理性。根据曲线，这种自制装置已经实现了几种空间相位分布。结果表明，不仅最大相位延迟大于$2\unicode[STIX]{x03C0}$对于1053nm波长，控制精度也很高。与硅基液晶型空间光调制器相比，这种调制器具有产生平滑相位分布和避免黑矩阵效应的优点。