Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range

Recently, terahertz (THz) wireless communication has been widely investigated as the future prospect of wireless network architecture. However, most of the natural existing materials are inapplicable for THz devices, which hinder their further development. To promote the integration and channel capa...

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Autores principales:	Xiaoqiang Jiang, Wenhui Fan, Chong Qin, Xu Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	terahertz metasurface polarization conversion wavefront manipulation mode purity Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/dcf836ed069e4715930c9452d4f7ce1a
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spelling	oai:doaj.org-article:dcf836ed069e4715930c9452d4f7ce1a2021-11-25T18:30:40ZUltra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range10.3390/nano111128952079-4991https://doaj.org/article/dcf836ed069e4715930c9452d4f7ce1a2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2895https://doaj.org/toc/2079-4991Recently, terahertz (THz) wireless communication has been widely investigated as the future prospect of wireless network architecture. However, most of the natural existing materials are inapplicable for THz devices, which hinder their further development. To promote the integration and channel capacity of the THz wireless communication systems, an ultrabroadband polarization conversion metasurface for efficient multi-functional wavefront manipulation is proposed. The designed metasurface is composed of an arrow-type structure sandwiched by a pair of orthogonal gratings, which can induce the Fabry-Pérot-like cavity for improving the transmission. Simulated results indicate that the transmission coefficient of the cross-polarization metasurface is higher than 90% from 0.73 THz to 2.24 THz, and the corresponding polarization conversion ratio is greater than 99.5%. Moreover, the phase coverage of 0–2π at operation frequency can be easily obtained by altering the geometric parameter of the metasurface. To demonstrate the concept of wavefront manipulation, anomalous refraction, focusing metalens, and vortex beam generation are investigated in detail. All of these applications exhibit a remarkable performance of the proposed metasurface that has great potential in prompting the efficient, broadband and compact systems for THz wireless communication.Xiaoqiang JiangWenhui FanChong QinXu ChenMDPI AGarticleterahertzmetasurfacepolarization conversionwavefront manipulationmode purityChemistryQD1-999ENNanomaterials, Vol 11, Iss 2895, p 2895 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	terahertz metasurface polarization conversion wavefront manipulation mode purity Chemistry QD1-999
spellingShingle	terahertz metasurface polarization conversion wavefront manipulation mode purity Chemistry QD1-999 Xiaoqiang Jiang Wenhui Fan Chong Qin Xu Chen Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
description	Recently, terahertz (THz) wireless communication has been widely investigated as the future prospect of wireless network architecture. However, most of the natural existing materials are inapplicable for THz devices, which hinder their further development. To promote the integration and channel capacity of the THz wireless communication systems, an ultrabroadband polarization conversion metasurface for efficient multi-functional wavefront manipulation is proposed. The designed metasurface is composed of an arrow-type structure sandwiched by a pair of orthogonal gratings, which can induce the Fabry-Pérot-like cavity for improving the transmission. Simulated results indicate that the transmission coefficient of the cross-polarization metasurface is higher than 90% from 0.73 THz to 2.24 THz, and the corresponding polarization conversion ratio is greater than 99.5%. Moreover, the phase coverage of 0–2π at operation frequency can be easily obtained by altering the geometric parameter of the metasurface. To demonstrate the concept of wavefront manipulation, anomalous refraction, focusing metalens, and vortex beam generation are investigated in detail. All of these applications exhibit a remarkable performance of the proposed metasurface that has great potential in prompting the efficient, broadband and compact systems for THz wireless communication.
format	article
author	Xiaoqiang Jiang Wenhui Fan Chong Qin Xu Chen
author_facet	Xiaoqiang Jiang Wenhui Fan Chong Qin Xu Chen
author_sort	Xiaoqiang Jiang
title	Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_short	Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_full	Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_fullStr	Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_full_unstemmed	Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_sort	ultra-broadband polarization conversion metasurface with high transmission for efficient multi-functional wavefront manipulation in the terahertz range
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/dcf836ed069e4715930c9452d4f7ce1a
work_keys_str_mv	AT xiaoqiangjiang ultrabroadbandpolarizationconversionmetasurfacewithhightransmissionforefficientmultifunctionalwavefrontmanipulationintheterahertzrange AT wenhuifan ultrabroadbandpolarizationconversionmetasurfacewithhightransmissionforefficientmultifunctionalwavefrontmanipulationintheterahertzrange AT chongqin ultrabroadbandpolarizationconversionmetasurfacewithhightransmissionforefficientmultifunctionalwavefrontmanipulationintheterahertzrange AT xuchen ultrabroadbandpolarizationconversionmetasurfacewithhightransmissionforefficientmultifunctionalwavefrontmanipulationintheterahertzrange
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Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range

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