文献类型：期刊文献

英文题名：Ferroelectric Liquid Crystal Dammann Grating by Patterned Photoalignment

作者：Fan, Fan[1,2];Yao, Lishuang[2];Wang, Xiaoqian[3];Shi, Liangyu[4];Srivastava, Abhishek K.[4];Chigrinov, Vladimir G.[4];Kwok, Hoi-Sing[4];Wen, Shuangchun[1]

机构：[1]Hunan Univ, Sch Phys & Elect, Key Lab Micro Nanooptoelect Devices, Minist Educ, Changsha 410082, Hunan, Peoples R China;[2]Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Peoples R China;[3]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[4]Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Partner State Key Lab PSKL Adv Displays & Optoele, Kowloon, Hong Kong, Peoples R China

年份：2017

卷号：7

期号：3

外文期刊名：CRYSTALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000398725600018)】；

基金：This work is partially supported by the National Natural Science Foundation of China (Grant No. 61605046 and 11574079), the State Key Laboratory of applied optics, and Fundamental Research Funds for the Central Universities of China.

语种：英文

外文关键词：ferroelectric liquid crystal; patterned photoalignment; dammann grating

摘要：In this article, a ferroelectric liquid crystal (FLC) dammann grating (DG) is demonstrated based on the patterned photoalignment technology. By applying low electric field (10 V) on the FLC DG, the grating can switch between a diffractive state with 7 x 7 optical spots array and a non-diffractive state, depending on the polarity of electric field. The FLC DG shows very fast switching speed with switching on time and off time to be only 81 mu s and 59 s respectively. Comparing with other fast LC DGs such as the ones based on blue phase LC or dual-frequency LC, the switching speed of the proposed FLC DG is about one order faster, which provides great potential and perspective for the FLC DG to be applied in a broad range of optical applications such as optical communication and beam shaping.