Arbitrary and reconfigurable optical vortex generation: a high-efficiency technique using director-varying liquid crystal fork gratings

被引：116

作者：

Chen, Peng ^{[1
,2
]}

Wei, Bing-Yan ^{[1
,2
]}

Ji, Wei ^{[1
,2
]}

Ge, Shi-Jun ^{[1
,2
]}

Hu, Wei ^{[1
,2
]}

Xu, Fei ^{[1
,2
]}

Chigrinov, Vladimir ^{[3
]}

Lu, Yan-Qing ^{[1
,2
,3
]}

机构：

[1] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Jiangsu, Peoples R China

[3] Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Ctr Display Res, Kowloon, Hong Kong, Peoples R China

来源：

PHOTONICS RESEARCH | 2015年 / 3卷 / 04期

关键词：

ORBITAL-ANGULAR-MOMENTUM; LAGUERRE-GAUSSIAN MODES; LASER-BEAMS; PHASE; LIGHT; TRANSFORMATION;

D O I：

10.1364/PRJ.3.000133

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A high-efficiency technique for optical vortex (OV) generation is proposed and demonstrated. The technique is based on liquid crystal fork gratings with space-variant azimuthal orientations, which are locally controlled via polarization-sensitive alignment layers. Thanks to the optical rewritability of the alignment agent and the dynamic image generation of the digital micro-mirror device, fork gratings can be instantly and arbitrarily reconfigured. Corresponding optical vortices carrying arbitrary azimuthal and radial indices are demonstrated with a conversion efficiency of 98.5%, exhibiting features of polarization control and electrical switching. The technique may pave a bright road toward OV generation, manipulation, and detection. (C) 2015 Chinese Laser Press

引用

页码：133 / 139

页数：7

共 44 条

[1] ORBITAL ANGULAR-MOMENTUM OF LIGHT AND THE TRANSFORMATION OF LAGUERRE-GAUSSIAN LASER MODES [J].