Hybrid Angular Gradient Phase Grating for Measuring the Orbital Angular Momentum of Perfect Optical Vortex Beams

Hybrid Angular Gradient Phase Grating for Measuring the Orbital Angular Momentum of Perfect Optical Vortex Beams

We propose an effective method to measure the orbital angular momentum of a perfect optical vortex (POV) beam with a hybrid angular gradient phase grating (HAG-PG), which is a gradient grating with angular changing distribution. The HAG-PG performs the transformation from the POV to the dark stripes...

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Main Authors: Chao Chu, Shecheng Gao, Zhibing Liu, Jiajing Tu, Jishun Yang, Chenglong Hao, Weiping Liu, Zhaohui Li
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Photonics Journal
Subjects:
Phase grating
perfect optical vortex
Online Access:https://ieeexplore.ieee.org/document/9064524/
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spelling doaj-b9392ac59e464c87a2f9841a1bbaba262021-03-29T18:00:41ZengIEEEIEEE Photonics Journal1943-06552020-01-011231910.1109/JPHOT.2020.29862669064524Hybrid Angular Gradient Phase Grating for Measuring the Orbital Angular Momentum of Perfect Optical Vortex BeamsChao Chu0https://orcid.org/0000-0002-2118-4596Shecheng Gao1https://orcid.org/0000-0002-7006-5702Zhibing Liu2Jiajing Tu3https://orcid.org/0000-0003-1702-3615Jishun Yang4Chenglong Hao5Weiping Liu6Zhaohui Li7School of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, ChinaCollege of Information Science and Technology, Department of Electronic Engineering, Jinan University, Guangzhou, ChinaSchool of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, ChinaCollege of Information Science and Technology, Department of Electronic Engineering, Jinan University, Guangzhou, ChinaSchool of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, ChinaDepartment of ECE, National University of Singapore, SingaporeCollege of Information Science and Technology, Department of Electronic Engineering, Jinan University, Guangzhou, ChinaSchool of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, ChinaWe propose an effective method to measure the orbital angular momentum of a perfect optical vortex (POV) beam with a hybrid angular gradient phase grating (HAG-PG), which is a gradient grating with angular changing distribution. The HAG-PG performs the transformation from the POV to the dark stripes of the diffraction intensity patterns. From the number and the orientation of dark stripes of far-field diffraction patterns formed by the HAG-PG, the modulus of TC and sign of the incident POV beam can be determined. The high scalability of this method for being unrestricted by the Fourier plane and its adaptation for measuring the POV beams with different states are demonstrated by loading the HAG-PG hologram on a spatial light modulator. And the detection sensitivity of the POV beam can be significantly improved. The experimental results agree well with the theoretical simulations.https://ieeexplore.ieee.org/document/9064524/Phase gratingperfect optical vortex
collection DOAJ
language English
format Article
sources DOAJ
author Chao Chu
Shecheng Gao
Zhibing Liu
Jiajing Tu
Jishun Yang
Chenglong Hao
Weiping Liu
Zhaohui Li
spellingShingle Chao Chu
Shecheng Gao
Zhibing Liu
Jiajing Tu
Jishun Yang
Chenglong Hao
Weiping Liu
Zhaohui Li
Hybrid Angular Gradient Phase Grating for Measuring the Orbital Angular Momentum of Perfect Optical Vortex Beams
IEEE Photonics Journal
Phase grating
perfect optical vortex
author_facet Chao Chu
Shecheng Gao
Zhibing Liu
Jiajing Tu
Jishun Yang
Chenglong Hao
Weiping Liu
Zhaohui Li
author_sort Chao Chu
title Hybrid Angular Gradient Phase Grating for Measuring the Orbital Angular Momentum of Perfect Optical Vortex Beams
title_short Hybrid Angular Gradient Phase Grating for Measuring the Orbital Angular Momentum of Perfect Optical Vortex Beams
title_full Hybrid Angular Gradient Phase Grating for Measuring the Orbital Angular Momentum of Perfect Optical Vortex Beams
title_fullStr Hybrid Angular Gradient Phase Grating for Measuring the Orbital Angular Momentum of Perfect Optical Vortex Beams
title_full_unstemmed Hybrid Angular Gradient Phase Grating for Measuring the Orbital Angular Momentum of Perfect Optical Vortex Beams
title_sort hybrid angular gradient phase grating for measuring the orbital angular momentum of perfect optical vortex beams
publisher IEEE
series IEEE Photonics Journal
issn 1943-0655
publishDate 2020-01-01
description We propose an effective method to measure the orbital angular momentum of a perfect optical vortex (POV) beam with a hybrid angular gradient phase grating (HAG-PG), which is a gradient grating with angular changing distribution. The HAG-PG performs the transformation from the POV to the dark stripes of the diffraction intensity patterns. From the number and the orientation of dark stripes of far-field diffraction patterns formed by the HAG-PG, the modulus of TC and sign of the incident POV beam can be determined. The high scalability of this method for being unrestricted by the Fourier plane and its adaptation for measuring the POV beams with different states are demonstrated by loading the HAG-PG hologram on a spatial light modulator. And the detection sensitivity of the POV beam can be significantly improved. The experimental results agree well with the theoretical simulations.
topic Phase grating
perfect optical vortex
url https://ieeexplore.ieee.org/document/9064524/
work_keys_str_mv AT chaochu hybridangulargradientphasegratingformeasuringtheorbitalangularmomentumofperfectopticalvortexbeams
AT shechenggao hybridangulargradientphasegratingformeasuringtheorbitalangularmomentumofperfectopticalvortexbeams
AT zhibingliu hybridangulargradientphasegratingformeasuringtheorbitalangularmomentumofperfectopticalvortexbeams
AT jiajingtu hybridangulargradientphasegratingformeasuringtheorbitalangularmomentumofperfectopticalvortexbeams
AT jishunyang hybridangulargradientphasegratingformeasuringtheorbitalangularmomentumofperfectopticalvortexbeams
AT chenglonghao hybridangulargradientphasegratingformeasuringtheorbitalangularmomentumofperfectopticalvortexbeams
AT weipingliu hybridangulargradientphasegratingformeasuringtheorbitalangularmomentumofperfectopticalvortexbeams
AT zhaohuili hybridangulargradientphasegratingformeasuringtheorbitalangularmomentumofperfectopticalvortexbeams
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