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

页码：5822 / 5828

页数：7

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