提出采用液晶空间光调制器进行激光束的实时、可调控光束空间整形的新方法,研究了液晶空间光调制器的光学调制特性,用液晶空间光调制器实时产生的软边切趾光阑与空间滤波器结合,有效地对任意光束进行空间整形,获得光束填充因子高、近"平顶”光强的光束近场分布.

A new method for real time and controllable laser beam shaping using liquid crystal spatial light modulator (LC-SLM) is presented. The optical modulation characteristics of LC SLM are studied. An optical system that consists of a soft edge serrated aperture formed by LC SLM and a filter could effectively convert an arbitrary profiles beam into a flattop intensity beam with a high fill factor in the near field.