Multiple optical vortices generated by azimuthal fractal spiral zone plates based on liquid crystal spatial light modulator

被引：10

作者：

Zang, Huaping ^{[1
]}

Zheng, Chenglong ^{[1
]}

Ji, Ziwen ^{[1
]}

Liu, Xiaomin ^{[1
]}

Tian, Yongzhi ^{[1
]}

Wei, Lai ^{[2
]}

Fan, Quanping ^{[2
]}

Wang, Xiangru ^{[3
]}

Cao, Leifeng ^{[2
]}

Liang, Erjun ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Henan, Peoples R China

[2] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Sichuan, Peoples R China

[3] Univ Elect Sci Technol China, Sch Optoelect Informat, Chengdu 610054, Sichuan, Peoples R China

来源：

OPTIK | 2018年 / 175卷

基金：

中国国家自然科学基金;

关键词：

Zone plates; Optical vortices; Orbital angular momentum; Diffraction elements; ORBITAL ANGULAR-MOMENTUM; BEAMS; VORTEX; HOLOGRAMS; PARTICLES; TWEEZERS;

D O I：

10.1016/j.ijleo.2018.08.092

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Azimuthal fractal spiral zone plates (AFSZPs) with particular fractal characteristics are proposed which have the ability to increase the number of foci comparing with conventional spiral zone plates. The generated beams possess sequence of optical vortices along the propagation direction with preset resolution. Numerical simulations are carried out under plane wave illumination and the good performance of this fractal diffractive optical elements are verified experimentally based on a programmable phase-only liquid-crystal spatial light modulator (SLM). In addition, the effects on the axial irradiance and resolution of foci caused by variations of parameters are also presented.

引用

页码：344 / 350

页数：7

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