Terahertz circular Airy vortex beams

Abstract Vortex beams have received considerable research interests both in optical and millimeter-wave domain since its potential to be utilized in the wireless communications and novel imaging systems. Many well-known optical beams have been demonstrated to carry orbital angular momentum (OAM), su...

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Autores principales:	Changming Liu, Jinsong Liu, Liting Niu, Xuli Wei, Kejia Wang, Zhengang Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3667323cc5494e59b54d0ea5abf29fb3
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spelling	oai:doaj.org-article:3667323cc5494e59b54d0ea5abf29fb32021-12-02T16:06:28ZTerahertz circular Airy vortex beams10.1038/s41598-017-04373-62045-2322https://doaj.org/article/3667323cc5494e59b54d0ea5abf29fb32017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04373-6https://doaj.org/toc/2045-2322Abstract Vortex beams have received considerable research interests both in optical and millimeter-wave domain since its potential to be utilized in the wireless communications and novel imaging systems. Many well-known optical beams have been demonstrated to carry orbital angular momentum (OAM), such as Laguerre-Gaussian beams and high-order Bessel beams. Recently, the radially symmetric Airy beams that exhibit an abruptly autofocusing feature are also demonstrated to be capable of carrying OAM in the optical domain. However, due to the lack of efficient devices to manipulate terahertz (THz) beams, it could be a challenge to demonstrate the radially symmetric Airy beams in the THz domain. Here we demonstrate the THz circular Airy vortex beams (CAVBs) with a 0.3-THz continuous wave through 3D printing technology. Assisted by the rapidly 3D-printed phase plates, individual OAM states with topological charge l ranging from l = 0 to l = 3 and a multiplexed OAM state are successfully imposed into the radially symmetric Airy beams. We both numerically and experimentally investigate the propagation dynamics of the generated THz CAVBs, and the simulations agree well with the observations.Changming LiuJinsong LiuLiting NiuXuli WeiKejia WangZhengang YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Changming Liu Jinsong Liu Liting Niu Xuli Wei Kejia Wang Zhengang Yang Terahertz circular Airy vortex beams
description	Abstract Vortex beams have received considerable research interests both in optical and millimeter-wave domain since its potential to be utilized in the wireless communications and novel imaging systems. Many well-known optical beams have been demonstrated to carry orbital angular momentum (OAM), such as Laguerre-Gaussian beams and high-order Bessel beams. Recently, the radially symmetric Airy beams that exhibit an abruptly autofocusing feature are also demonstrated to be capable of carrying OAM in the optical domain. However, due to the lack of efficient devices to manipulate terahertz (THz) beams, it could be a challenge to demonstrate the radially symmetric Airy beams in the THz domain. Here we demonstrate the THz circular Airy vortex beams (CAVBs) with a 0.3-THz continuous wave through 3D printing technology. Assisted by the rapidly 3D-printed phase plates, individual OAM states with topological charge l ranging from l = 0 to l = 3 and a multiplexed OAM state are successfully imposed into the radially symmetric Airy beams. We both numerically and experimentally investigate the propagation dynamics of the generated THz CAVBs, and the simulations agree well with the observations.
format	article
author	Changming Liu Jinsong Liu Liting Niu Xuli Wei Kejia Wang Zhengang Yang
author_facet	Changming Liu Jinsong Liu Liting Niu Xuli Wei Kejia Wang Zhengang Yang
author_sort	Changming Liu
title	Terahertz circular Airy vortex beams
title_short	Terahertz circular Airy vortex beams
title_full	Terahertz circular Airy vortex beams
title_fullStr	Terahertz circular Airy vortex beams
title_full_unstemmed	Terahertz circular Airy vortex beams
title_sort	terahertz circular airy vortex beams
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/3667323cc5494e59b54d0ea5abf29fb3
work_keys_str_mv	AT changmingliu terahertzcircularairyvortexbeams AT jinsongliu terahertzcircularairyvortexbeams AT litingniu terahertzcircularairyvortexbeams AT xuliwei terahertzcircularairyvortexbeams AT kejiawang terahertzcircularairyvortexbeams AT zhengangyang terahertzcircularairyvortexbeams
_version_	1718384954182729728

Terahertz circular Airy vortex beams

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