Complex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging

Abstract In this study, we generate various complex beams carrying angular momentum (AM) by using a programmable beam shaping system to mimic typical q-plates. When a circularly polarized wave is incident onto the system, the emerging beam reverses its spin handedness and obtains a spatial phase fac...

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Autores principales:	Ching-Han Yang, Andy Ying-Guey Fuh
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6db84f03bb534ba6ab11ecfca22787ad
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spelling	oai:doaj.org-article:6db84f03bb534ba6ab11ecfca22787ad2021-12-02T16:06:08ZComplex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging10.1038/s41598-017-02973-w2045-2322https://doaj.org/article/6db84f03bb534ba6ab11ecfca22787ad2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02973-whttps://doaj.org/toc/2045-2322Abstract In this study, we generate various complex beams carrying angular momentum (AM) by using a programmable beam shaping system to mimic typical q-plates. When a circularly polarized wave is incident onto the system, the emerging beam reverses its spin handedness and obtains a spatial phase factor. This phase factor can be engineered by designing a computer-generated hologram (CGH) and applying it to a spatial light modulator (SLM) to produce a beam with controllable spatially distributed orbital angular momentum (OAM) density. To determine the properties of the generated fields, we combine digital holography (DH) with the beam shaping system to yield visualizations of the beam intensity, phase, and AM distributions over the transverse plane at different propagation distances. Comparisons of the theoretically and experimentally obtained results show good qualitative agreement. This study advances our understanding and interpretation of AM characteristics produced by a programmable q-plate-like system.Ching-Han YangAndy Ying-Guey FuhNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ching-Han Yang Andy Ying-Guey Fuh Complex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging
description	Abstract In this study, we generate various complex beams carrying angular momentum (AM) by using a programmable beam shaping system to mimic typical q-plates. When a circularly polarized wave is incident onto the system, the emerging beam reverses its spin handedness and obtains a spatial phase factor. This phase factor can be engineered by designing a computer-generated hologram (CGH) and applying it to a spatial light modulator (SLM) to produce a beam with controllable spatially distributed orbital angular momentum (OAM) density. To determine the properties of the generated fields, we combine digital holography (DH) with the beam shaping system to yield visualizations of the beam intensity, phase, and AM distributions over the transverse plane at different propagation distances. Comparisons of the theoretically and experimentally obtained results show good qualitative agreement. This study advances our understanding and interpretation of AM characteristics produced by a programmable q-plate-like system.
format	article
author	Ching-Han Yang Andy Ying-Guey Fuh
author_facet	Ching-Han Yang Andy Ying-Guey Fuh
author_sort	Ching-Han Yang
title	Complex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging
title_short	Complex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging
title_full	Complex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging
title_fullStr	Complex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging
title_full_unstemmed	Complex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging
title_sort	complex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6db84f03bb534ba6ab11ecfca22787ad
work_keys_str_mv	AT chinghanyang complexbeamshapingbasedonanequivalentqplatesystemandanalysisofitspropertiesusingdigitalholographypolarizationimaging AT andyyinggueyfuh complexbeamshapingbasedonanequivalentqplatesystemandanalysisofitspropertiesusingdigitalholographypolarizationimaging
_version_	1718385094209568768

Complex beam shaping based on an equivalent q-plate system and analysis of its properties using digital holography polarization imaging

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