Large-angle and high-efficiency tunable phase grating using fringe field switching liquid crystal
Large-angle and high-efficiency tunable phase grating using fringe field switching liquid crystal
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DOI：
10.1364/oe.23.012274
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发表时间：
2015-05-04
期刊：
影响因子：
3.8
通讯作者：
Wu, Shin-Tson
中科院分区：
文献类型：
--
作者：
Xu, Daming;Tan, Guanjun;Wu, Shin-Tson
提出了一种利用边缘场开关（FFS）单元的可开关相位光栅。FFS相位光栅具有衍射角大、衍射效率高、响应时间快、对比度高等优点。它可以将>32%的光折射到+/-2阶，具有12.1度的大衍射角。同时，即使在-40摄氏度下，其响应时间也相对较快。一个模拟模型来解释实验结果，并取得了良好的协议。我们还展示了一个闪耀相位光栅，以实现可调光束转向之间的第0，第1和第2订单。2015美国光学学会Optical Society of America
We propose a switchable phase grating using fringe field switching (FFS) cells. The FFS phase grating possesses several attractive features: large diffraction angle, high diffraction efficiency, fast response time, and high contrast ratio. It can diffract >32% light to +/- 2nd orders with a large diffraction angle of 12.1 degrees. Meanwhile, its response time remains relatively fast even at -40 degrees C. A simulation model is developed to explain the experimental results and good agreement is obtained. We also demonstrate a blazed phase grating to achieve tunable beam steering between 0th, 1st and 2nd orders. (C)2015 Optical Society of America