Bandwidth broadening of a linear polarization converter by near-field metasurface coupling

Abstract We experimentally demonstrate a highly efficient, broadband linear polarization converter functioning at terahertz frequencies. The linear polarization converter is composed of three metasurfaces and two dielectric layers interlaced with each other. The neighboring unit cells of the central...

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Autores principales:	Xi Gao, Leena Singh, Wanli Yang, Jingjing Zheng, Haiou Li, Weili Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4b5344cd06fd4a768e5bb35f4145ba5b
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spelling	oai:doaj.org-article:4b5344cd06fd4a768e5bb35f4145ba5b2021-12-02T15:05:14ZBandwidth broadening of a linear polarization converter by near-field metasurface coupling10.1038/s41598-017-07296-42045-2322https://doaj.org/article/4b5344cd06fd4a768e5bb35f4145ba5b2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07296-4https://doaj.org/toc/2045-2322Abstract We experimentally demonstrate a highly efficient, broadband linear polarization converter functioning at terahertz frequencies. The linear polarization converter is composed of three metasurfaces and two dielectric layers interlaced with each other. The neighboring unit cells of the central metasurface layer of the linear polarization converter exhibit strong electromagnetic coupling, which increases the number of resonances and results in significant bandwidth broadening. The simulation and experimental results show that in the frequency range of 0.2 to 0.4 THz, the proposed polarization converter has a flat transmission curve and exhibits a transmission efficiency that is higher than 80%. High performance terahertz polarization conversion is desirable in many fields, such as terahertz spectroscopy, imaging, and communications.Xi GaoLeena SinghWanli YangJingjing ZhengHaiou LiWeili ZhangNature 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 Xi Gao Leena Singh Wanli Yang Jingjing Zheng Haiou Li Weili Zhang Bandwidth broadening of a linear polarization converter by near-field metasurface coupling
description	Abstract We experimentally demonstrate a highly efficient, broadband linear polarization converter functioning at terahertz frequencies. The linear polarization converter is composed of three metasurfaces and two dielectric layers interlaced with each other. The neighboring unit cells of the central metasurface layer of the linear polarization converter exhibit strong electromagnetic coupling, which increases the number of resonances and results in significant bandwidth broadening. The simulation and experimental results show that in the frequency range of 0.2 to 0.4 THz, the proposed polarization converter has a flat transmission curve and exhibits a transmission efficiency that is higher than 80%. High performance terahertz polarization conversion is desirable in many fields, such as terahertz spectroscopy, imaging, and communications.
format	article
author	Xi Gao Leena Singh Wanli Yang Jingjing Zheng Haiou Li Weili Zhang
author_facet	Xi Gao Leena Singh Wanli Yang Jingjing Zheng Haiou Li Weili Zhang
author_sort	Xi Gao
title	Bandwidth broadening of a linear polarization converter by near-field metasurface coupling
title_short	Bandwidth broadening of a linear polarization converter by near-field metasurface coupling
title_full	Bandwidth broadening of a linear polarization converter by near-field metasurface coupling
title_fullStr	Bandwidth broadening of a linear polarization converter by near-field metasurface coupling
title_full_unstemmed	Bandwidth broadening of a linear polarization converter by near-field metasurface coupling
title_sort	bandwidth broadening of a linear polarization converter by near-field metasurface coupling
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/4b5344cd06fd4a768e5bb35f4145ba5b
work_keys_str_mv	AT xigao bandwidthbroadeningofalinearpolarizationconverterbynearfieldmetasurfacecoupling AT leenasingh bandwidthbroadeningofalinearpolarizationconverterbynearfieldmetasurfacecoupling AT wanliyang bandwidthbroadeningofalinearpolarizationconverterbynearfieldmetasurfacecoupling AT jingjingzheng bandwidthbroadeningofalinearpolarizationconverterbynearfieldmetasurfacecoupling AT haiouli bandwidthbroadeningofalinearpolarizationconverterbynearfieldmetasurfacecoupling AT weilizhang bandwidthbroadeningofalinearpolarizationconverterbynearfieldmetasurfacecoupling
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Bandwidth broadening of a linear polarization converter by near-field metasurface coupling

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