Optically Switchable Circularly Polarization-Dependent Optical Vortex

被引：11
作者：
Xu, Xiaowan [1 ]
Luo, Dan [1 ]
Dai, Haitao [2 ]
机构：
[1] Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
[2] Tianjin Univ, Coll Sci, Dept Appl Phys, Tianjin 300072, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2016年 / 8卷 / 06期
基金：
美国国家科学基金会;
关键词：
Polarization-dependent; optical vortex; azobenzene liquid crystal; ROTATIONAL FREQUENCY-SHIFT; AZOBENZENE LIQUID-CRYSTALS; ORBITAL ANGULAR-MOMENTUM; BLUE PHASE; LIGHT-BEAM; GENERATION;
D O I：
10.1109/JPHOT.2016.2623671
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An optical vortex, which consists of blue phase and isotropic phase, is generated from azobenzene liquid crystal cell with computer generated hologram pattern. This device is optically switchable and can be erased and generated by ultraviolet or green light, respectively. An intensity modulation is formed between blue phase and isotropic phase of liquid crystal cell, where the blue phase liquid crystal selectively reflects circular polarization light due to the Bragg reflection, resulting in a circularly polarization-dependent optical vortex. The proposed method can be applied to any other diffractive optical elements.
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页数：7
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