Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam

We report on a partially coherent power-exponent-phase vortex beam (PC-PEPV), whose spatial coherence is controllable and the initial phase exhibits a periodic power exponential change. The PC-PEPV beam was generated experimentally with various spatial coherence widths, and its propagation propertie...

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Autores principales:	Hao Zhang, Xingyuan Lu, Zhuoyi Wang, A. P. Konijnenberg, Haiyun Wang, Chengliang Zhao, Yangjian Cai
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	singular optics vortex beam partially coherent power-exponent-phase beam shaping Physics QC1-999
Acceso en línea:	https://doaj.org/article/d301b1f9f2184ae794c5171f8a74857d
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spelling	oai:doaj.org-article:d301b1f9f2184ae794c5171f8a74857d2021-11-30T12:14:58ZGeneration and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam2296-424X10.3389/fphy.2021.781688https://doaj.org/article/d301b1f9f2184ae794c5171f8a74857d2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fphy.2021.781688/fullhttps://doaj.org/toc/2296-424XWe report on a partially coherent power-exponent-phase vortex beam (PC-PEPV), whose spatial coherence is controllable and the initial phase exhibits a periodic power exponential change. The PC-PEPV beam was generated experimentally with various spatial coherence widths, and its propagation properties were studied both numerically and experimentally. By modulating the topological charge (TC) and power order of the PC-PEPV beam, the structure of the vortex beam can be adjusted from circular to elliptic, triangular, quadrangle, and pentagon. When the power order is odd, the PC-PEPV beam with a negative TC can be generated, and the profiles of the PC-PEPV beam can be precisely controlled via adjusting the value of the power order. For the case of high spatial coherence width, the number of the dark cores in the polygonal intensity array of the PC-PEPV beam equals the magnitude of the TC. However, when decreasing the spatial coherence width, the dark cores vanish and the intensity gradually transforms into a polygonal light spot. Fortunately, from the modulus and phase distributions of the cross-spectral density (CSD), both the magnitude and sign of the TC can be determined. In the experiment, the modulus and phase distribution of the CSD are verified by the phase perturbation method. This study has potential applications in beam shaping, micro-particle trapping, and optical tweezers.Hao ZhangXingyuan LuZhuoyi WangA. P. KonijnenbergHaiyun WangChengliang ZhaoYangjian CaiYangjian CaiYangjian CaiFrontiers Media S.A.articlesingular opticsvortex beampartially coherentpower-exponent-phasebeam shapingPhysicsQC1-999ENFrontiers in Physics, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	singular optics vortex beam partially coherent power-exponent-phase beam shaping Physics QC1-999
spellingShingle	singular optics vortex beam partially coherent power-exponent-phase beam shaping Physics QC1-999 Hao Zhang Xingyuan Lu Zhuoyi Wang A. P. Konijnenberg Haiyun Wang Chengliang Zhao Yangjian Cai Yangjian Cai Yangjian Cai Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam
description	We report on a partially coherent power-exponent-phase vortex beam (PC-PEPV), whose spatial coherence is controllable and the initial phase exhibits a periodic power exponential change. The PC-PEPV beam was generated experimentally with various spatial coherence widths, and its propagation properties were studied both numerically and experimentally. By modulating the topological charge (TC) and power order of the PC-PEPV beam, the structure of the vortex beam can be adjusted from circular to elliptic, triangular, quadrangle, and pentagon. When the power order is odd, the PC-PEPV beam with a negative TC can be generated, and the profiles of the PC-PEPV beam can be precisely controlled via adjusting the value of the power order. For the case of high spatial coherence width, the number of the dark cores in the polygonal intensity array of the PC-PEPV beam equals the magnitude of the TC. However, when decreasing the spatial coherence width, the dark cores vanish and the intensity gradually transforms into a polygonal light spot. Fortunately, from the modulus and phase distributions of the cross-spectral density (CSD), both the magnitude and sign of the TC can be determined. In the experiment, the modulus and phase distribution of the CSD are verified by the phase perturbation method. This study has potential applications in beam shaping, micro-particle trapping, and optical tweezers.
format	article
author	Hao Zhang Xingyuan Lu Zhuoyi Wang A. P. Konijnenberg Haiyun Wang Chengliang Zhao Yangjian Cai Yangjian Cai Yangjian Cai
author_facet	Hao Zhang Xingyuan Lu Zhuoyi Wang A. P. Konijnenberg Haiyun Wang Chengliang Zhao Yangjian Cai Yangjian Cai Yangjian Cai
author_sort	Hao Zhang
title	Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam
title_short	Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam
title_full	Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam
title_fullStr	Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam
title_full_unstemmed	Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam
title_sort	generation and propagation of partially coherent power-exponent-phase vortex beam
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/d301b1f9f2184ae794c5171f8a74857d
work_keys_str_mv	AT haozhang generationandpropagationofpartiallycoherentpowerexponentphasevortexbeam AT xingyuanlu generationandpropagationofpartiallycoherentpowerexponentphasevortexbeam AT zhuoyiwang generationandpropagationofpartiallycoherentpowerexponentphasevortexbeam AT apkonijnenberg generationandpropagationofpartiallycoherentpowerexponentphasevortexbeam AT haiyunwang generationandpropagationofpartiallycoherentpowerexponentphasevortexbeam AT chengliangzhao generationandpropagationofpartiallycoherentpowerexponentphasevortexbeam AT yangjiancai generationandpropagationofpartiallycoherentpowerexponentphasevortexbeam AT yangjiancai generationandpropagationofpartiallycoherentpowerexponentphasevortexbeam AT yangjiancai generationandpropagationofpartiallycoherentpowerexponentphasevortexbeam
_version_	1718406654273257472

Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam

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