Fork gratings based on ferroelectric liquid crystals

被引：25
|
作者：
Ma, Y. [1 ]
Wei, B. Y. [2 ,3 ]
Shi, L. Y. [1 ]
Srivastava, A. K. [1 ]
Chigrinov, V. G. [1 ]
Kwok, H-S. [1 ]
Hu, W. [2 ,3 ]
Lu, Y. Q. [2 ,3 ]
机构：
[1] Hong Kong Univ Sci & Technol, State Key Lab Adv Displays & Optoelet Technol, Partner Lab, Kowloon, Hong Kong, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[3] Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Jiangsu, Peoples R China
来源：
OPTICS EXPRESS | 2016年 / 24卷 / 06期
基金：
中国国家自然科学基金;
关键词：
ORBITAL ANGULAR-MOMENTUM; COMPUTER-GENERATED HOLOGRAMS; OPTICAL VORTICES; PHASE SINGULARITIES; LASER-BEAMS; LIGHT; PLATES;
D O I：
10.1364/OE.24.005822
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this article, we disclose a fork grating (FG) based on the photo-aligned ferroelectric liquid crystal (FLC). The Digital Micro-mirror Device based system is used as a dynamic photomask to generated different holograms. Because of controlled anchoring energy, the photo alignment process offers optimal conditions for the multi-domain FLC alignment. Two different electro-optical modes namely DIFF/TRANS and DIFF/OFF switchable modes have been proposed where the diffraction can be switched either to no diffraction or to a completely black state, respectively. The FLC FG shows high diffraction efficiency and fast response time of 50 mu s that is relatively faster than existing technologies. Thus, the FLC FG may pave a good foundation toward optical vertices generation and manipulation that could find applications in a variety of devices. (C) 2016 Optical Society of America
引用
收藏
页码：5822 / 5828
页数：7
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