文献类型：期刊文献

英文题名：Fast switchable ferroelectric liquid crystal gratings with two electro-optical modes

作者：Ma, Ying[1];Wang, Xiaoqian[2];Srivastava, A. K.[1];Chigrinov, V. G.[1];Kwok, H. -S.[1]

机构：[1]Hong Kong Univ Sci & Technol, Partner Lab, State Key Lab Adv Displays & Optoelect Technol, Kowloon 999077, Hong Kong, Peoples R China;[2]E China Univ Sci & Technol, Phys Dept, Shanghai 200237, Peoples R China

年份：2016

卷号：6

期号：3

外文期刊名：AIP ADVANCES

收录：;EI(收录号：20161202112804);WOS:【SCI-EXPANDED(收录号:WOS:000373684200066)】；

基金：We gratefully acknowledge the support of the Hong Kong Government and the State Key Laboratory on Advanced Displays and Optoelectronics Technologies and the Hong Kong SAR Research Grants Council grants number 614413.

语种：英文

外文关键词：Diffraction gratings - Liquid crystals - Diffraction - Ferroelectricity

摘要：In this article, we reveal a theoretical and experimental illustration of the Ferroelectric liquid crystal (FLC) grating fabricated by mean of patterned alignment based on photo-alignment. The complexity related to the mismatching of the predefined alignment domains on the top and bottom substrate has been avoided by incorporating only one side photo aligned substrate while the other substrate does not have any alignment layer. Depending on the easy axis in the said alignment domains and the azimuth plane of the impinging polarized light, the diffracting element can be tuned in two modes i. e. DIFF/OFF switchable and DIFF/TRANS switchable modes, which can be applied to different applications. The diffraction profile has been illustrated theoretically that fits well with the experimental finding and thus the proposed diffraction elements with fast response time and high diffraction efficiency could find application in many modern devices. (c) 2016 Author(s).