当前液晶显示已随处可见，然而，液晶的非显示应用同样有着巨大的市场潜力。曾在液晶的光通信器件研制方面有较长期的积累，近年来，进一步致力于将液晶应用于不同波段(可见-近红外-太赫兹)的光场调控。提出了一种利用液晶光控图案化取向实现光场产生、调制和变换的技术，研制了一套基于数字微镜阵列(DMD)的微区液晶光取向系统。基于此系统，制备了系列不同液晶模式、不同参数的液晶取向微结构，并对其衍射特性进行了研究，实现了对涡旋光、艾里光、矢量光等复杂光场的动态变换和调控。该工作可在新型光镊,轨道角动量复用光通信，甚至在量子信息处理中得到应用。

The application for non-displays of liquid crystal has great marketing potential, as important as the marketing of liquid crystal displays, which now can be seen everywhere. We have a long-term accumulation in the research of the optical communication components, and recently we focus on the optical manipulation with liquid crystal in different optical bands (from visible to near-infrared and even in terahertz). Here we propose a technique to generate, modulate and transform the optical field by employing liquid crystal photo-alignment, and a digital micromirror device (DMD)-based liquid crystal photo-alignment system is developed. We fabricate a series of micro-structures with different liquid crystal alignments through this system and study these diffraction characteristics to transform and modulate complex optical fields dynamically, including vortex beam, Airy beam and vector beam. Our work could be applied to optical tweezers, orbital angular momentum (OAM) multiplexed optical communication and even to quantum information processing.<收稿日期:>2016-05-26<收到修改稿日期:>