Integrating 5 x 5 Dammann gratings to detect orbital angular momentum states of beams with the range of-24 to+24

被引：51

作者：

Fu, Shiyao ^{[1
]}

Wang, Tonglu ^{[2
]}

Zhang, Shikun ^{[1
]}

Gao, Chunqing ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Optoelect, Beijing 100081, Peoples R China

[2] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China

来源：

APPLIED OPTICS | 2016年 / 55卷 / 07期

关键词：

POLARIZATION VORTICES; OPTICAL TRAP; LIGHT; INTERFEROMETER;

D O I：

10.1364/AO.55.001514

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The 5 x 5 2D binary Dammann vortex grating can distribute energy among different diffraction orders equally and can realize measurement of orbital angular momentum ( OAM) states from -12 to +12. Here we combine a 5 x 5 Dammann vortex grating and a spiral phase plate with the order +12 or -12, which makes the topological charge of beams in the array increase or decrease by 12; thus, the range of measuring OAM states can be extended to a range from -24 to +24. We upload the holograms of such gratings on a liquid crystal spatial light modulator to do the experiment. The experimental results fit well with the simulation results. This method is also effective for multiplexed OAM beams and can be used in optical communications in the future. (C) 2016 Optical Society of America

引用

页码：1514 / 1517

页数：4

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