Arbitrary and reconfigurable optical vortex generation: a high-efficiency technique using director-varying liquid crystal fork gratings
Arbitrary and reconfigurable optical vortex generation: a high-efficiency technique using director-varying liquid crystal fork gratings
复制标题
任意且可重构的光学涡旋生成：一种使用变向液晶叉形光栅的高效技术
DOI：
10.1364/prj.3.000133
复制
发表时间：
2015-08-01
影响因子：
7.6
通讯作者：
Lu, Yan-Qing
中科院分区：
文献类型：
--
作者：
Chen, Peng;Wei, Bing-Yan;Lu, Yan-Qing
提出并论证了一种高效的光涡旋产生技术。该技术是基于液晶叉光栅与空间变化的方位角取向，这是局部控制通过偏振敏感的取向层。由于对准剂的光学可重写性和数字微镜器件的动态图像生成，叉形光栅可以立即和任意地重新配置。相应的光学涡旋携带任意方位角和径向指数证明与98.5%的转换效率，表现出偏振控制和电开关的功能。该技术可能为OV生成、操作和检测铺平一条光明的道路。
A high-efficiency technique for optical vortex (OV) generation is proposed and demonstrated. The technique is based on liquid crystal fork gratings with space-variant azimuthal orientations, which are locally controlled via polarization-sensitive alignment layers. Thanks to the optical rewritability of the alignment agent and the dynamic image generation of the digital micro-mirror device, fork gratings can be instantly and arbitrarily reconfigured. Corresponding optical vortices carrying arbitrary azimuthal and radial indices are demonstrated with a conversion efficiency of 98.5%, exhibiting features of polarization control and electrical switching. The technique may pave a bright road toward OV generation, manipulation, and detection.