High-Efficiency and Tunable Terahertz Linear-to-Circular Polarization Converters Based on All-Dielectric Metasurfaces

High-Efficiency and Tunable Terahertz Linear-to-Circular Polarization Converters Based on All-Dielectric Metasurfaces

Terahertz polarization converter has drawn great attention for its properties of wavefront control in recent years. However, the low transmission efficiency of these converters remains a major obstruction to be resolved. A promising solution is the all-dielectric metasurface, based on which, this st...

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Bibliographic Details
Main Authors: Yanzhao Hou, Chao Zhang, Chengrui Wang
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Metamaterials
optical materials
Online Access:https://ieeexplore.ieee.org/document/9136695/
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spelling doaj-0a4282fd358d43ec8b94aa8313a06c202021-03-30T03:25:52ZengIEEEIEEE Access2169-35362020-01-01814030314030910.1109/ACCESS.2020.30078389136695High-Efficiency and Tunable Terahertz Linear-to-Circular Polarization Converters Based on All-Dielectric MetasurfacesYanzhao Hou0https://orcid.org/0000-0001-5571-9539Chao Zhang1https://orcid.org/0000-0002-3512-7859Chengrui Wang2National Engineering Laboratory for Mobile Network Technologies, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaNational Engineering Laboratory for Mobile Network Technologies, Beijing University of Posts and Telecommunications, Beijing, ChinaTerahertz polarization converter has drawn great attention for its properties of wavefront control in recent years. However, the low transmission efficiency of these converters remains a major obstruction to be resolved. A promising solution is the all-dielectric metasurface, based on which, this study proposes a high-efficiency transmissive terahertz linear-to-circular polarization converter. The simulations show the transmission efficiency of the converter is beyond 88% with an ellipticity <; -0.8 from 0.555 to 0.737 THz, and the maximum efficiency even reaches 100% at 0.660 THz. Furthermore, the converter can also be actively manipulated by combining with dynamic material. The frequency sensitivity is 98 GHz/100K, and the modulation depth of ellipticity at 0.725 THz exceeds 76%. The excellent performances of these converters offer more potentials for terahertz devices.https://ieeexplore.ieee.org/document/9136695/Metamaterialsoptical materials
collection DOAJ
language English
format Article
sources DOAJ
author Yanzhao Hou
Chao Zhang
Chengrui Wang
spellingShingle Yanzhao Hou
Chao Zhang
Chengrui Wang
High-Efficiency and Tunable Terahertz Linear-to-Circular Polarization Converters Based on All-Dielectric Metasurfaces
IEEE Access
Metamaterials
optical materials
author_facet Yanzhao Hou
Chao Zhang
Chengrui Wang
author_sort Yanzhao Hou
title High-Efficiency and Tunable Terahertz Linear-to-Circular Polarization Converters Based on All-Dielectric Metasurfaces
title_short High-Efficiency and Tunable Terahertz Linear-to-Circular Polarization Converters Based on All-Dielectric Metasurfaces
title_full High-Efficiency and Tunable Terahertz Linear-to-Circular Polarization Converters Based on All-Dielectric Metasurfaces
title_fullStr High-Efficiency and Tunable Terahertz Linear-to-Circular Polarization Converters Based on All-Dielectric Metasurfaces
title_full_unstemmed High-Efficiency and Tunable Terahertz Linear-to-Circular Polarization Converters Based on All-Dielectric Metasurfaces
title_sort high-efficiency and tunable terahertz linear-to-circular polarization converters based on all-dielectric metasurfaces
publisher IEEE
series IEEE Access
issn 2169-3536
publishDate 2020-01-01
description Terahertz polarization converter has drawn great attention for its properties of wavefront control in recent years. However, the low transmission efficiency of these converters remains a major obstruction to be resolved. A promising solution is the all-dielectric metasurface, based on which, this study proposes a high-efficiency transmissive terahertz linear-to-circular polarization converter. The simulations show the transmission efficiency of the converter is beyond 88% with an ellipticity <; -0.8 from 0.555 to 0.737 THz, and the maximum efficiency even reaches 100% at 0.660 THz. Furthermore, the converter can also be actively manipulated by combining with dynamic material. The frequency sensitivity is 98 GHz/100K, and the modulation depth of ellipticity at 0.725 THz exceeds 76%. The excellent performances of these converters offer more potentials for terahertz devices.
topic Metamaterials
optical materials
url https://ieeexplore.ieee.org/document/9136695/
work_keys_str_mv AT yanzhaohou highefficiencyandtunableterahertzlineartocircularpolarizationconvertersbasedonalldielectricmetasurfaces
AT chaozhang highefficiencyandtunableterahertzlineartocircularpolarizationconvertersbasedonalldielectricmetasurfaces
AT chengruiwang highefficiencyandtunableterahertzlineartocircularpolarizationconvertersbasedonalldielectricmetasurfaces
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