Antireflection-assisted all-dielectric terahertz metamaterial polarization converter

Jianchen Zi; Quan Xu; Qiu Wang; Chunxiu Tian; Yanfeng Li; Xixiang Zhang; Jiaguang Han; Weili Zhang

doi:10.1063/1.5042784

Antireflection-assisted all-dielectric terahertz metamaterial polarization converter

Jianchen Zi, Quan Xu, Qiu Wang, Chunxiu Tian, Yanfeng Li, Xixiang Zhang, Jiaguang Han, Weili Zhang

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

We present a transmissive all-dielectric terahertz (THz) metamaterial half-wave plate with a double-working-layer structure. One layer works as a half-wave plate to enable polarization conversion of the incident THz wave, and the other layer functions as an antireflection layer to improve the transmission. The device is made of pure silicon only and can realize a high-performance polarization conversion at the designed THz frequency. Numerical simulations have been performed to show how the polarization properties of the THz wave can be adjusted by the structural parameters of the metamaterial. With appropriate structural parameters, the transmission for cross-polarization can reach 90%, and the polarization conversion rate can reach almost 100% at the designed operation frequency of 1 THz in simulation. Several samples have been fabricated and characterized, and the experimental results show a cross-polarized transmission of about 80% and a polarization conversion rate of almost 100% and agree well with the simulations.

Original language	English (US)
Pages (from-to)	101104
Journal	Applied Physics Letters
Volume	113
Issue number	10
DOIs	https://doi.org/10.1063/1.5042784
State	Published - Sep 6 2018

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title = "Antireflection-assisted all-dielectric terahertz metamaterial polarization converter",

abstract = "We present a transmissive all-dielectric terahertz (THz) metamaterial half-wave plate with a double-working-layer structure. One layer works as a half-wave plate to enable polarization conversion of the incident THz wave, and the other layer functions as an antireflection layer to improve the transmission. The device is made of pure silicon only and can realize a high-performance polarization conversion at the designed THz frequency. Numerical simulations have been performed to show how the polarization properties of the THz wave can be adjusted by the structural parameters of the metamaterial. With appropriate structural parameters, the transmission for cross-polarization can reach 90%, and the polarization conversion rate can reach almost 100% at the designed operation frequency of 1 THz in simulation. Several samples have been fabricated and characterized, and the experimental results show a cross-polarized transmission of about 80% and a polarization conversion rate of almost 100% and agree well with the simulations.",

author = "Jianchen Zi and Quan Xu and Qiu Wang and Chunxiu Tian and Yanfeng Li and Xixiang Zhang and Jiaguang Han and Weili Zhang",

note = "KAUST Repository Item: Exported on 2021-02-19 Acknowledgements: This work was supported by the National Basic Research Program of China (2014CB339800), the National Natural Science Foundation of China (61875150, 61622505, 61427814, 61377047, and 61420106006), the Program for Changjiang Scholars and Innovative Research Team in University (IRT13033), the Cooperative Innovation Center of Terahertz Science, and the U.S. National Science Foundation (ECCS-1232081).",

year = "2018",

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doi = "10.1063/1.5042784",

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T1 - Antireflection-assisted all-dielectric terahertz metamaterial polarization converter

AU - Zi, Jianchen

AU - Xu, Quan

AU - Wang, Qiu

AU - Tian, Chunxiu

AU - Li, Yanfeng

AU - Zhang, Xixiang

AU - Han, Jiaguang

AU - Zhang, Weili

N1 - KAUST Repository Item: Exported on 2021-02-19 Acknowledgements: This work was supported by the National Basic Research Program of China (2014CB339800), the National Natural Science Foundation of China (61875150, 61622505, 61427814, 61377047, and 61420106006), the Program for Changjiang Scholars and Innovative Research Team in University (IRT13033), the Cooperative Innovation Center of Terahertz Science, and the U.S. National Science Foundation (ECCS-1232081).

PY - 2018/9/6

Y1 - 2018/9/6

N2 - We present a transmissive all-dielectric terahertz (THz) metamaterial half-wave plate with a double-working-layer structure. One layer works as a half-wave plate to enable polarization conversion of the incident THz wave, and the other layer functions as an antireflection layer to improve the transmission. The device is made of pure silicon only and can realize a high-performance polarization conversion at the designed THz frequency. Numerical simulations have been performed to show how the polarization properties of the THz wave can be adjusted by the structural parameters of the metamaterial. With appropriate structural parameters, the transmission for cross-polarization can reach 90%, and the polarization conversion rate can reach almost 100% at the designed operation frequency of 1 THz in simulation. Several samples have been fabricated and characterized, and the experimental results show a cross-polarized transmission of about 80% and a polarization conversion rate of almost 100% and agree well with the simulations.

AB - We present a transmissive all-dielectric terahertz (THz) metamaterial half-wave plate with a double-working-layer structure. One layer works as a half-wave plate to enable polarization conversion of the incident THz wave, and the other layer functions as an antireflection layer to improve the transmission. The device is made of pure silicon only and can realize a high-performance polarization conversion at the designed THz frequency. Numerical simulations have been performed to show how the polarization properties of the THz wave can be adjusted by the structural parameters of the metamaterial. With appropriate structural parameters, the transmission for cross-polarization can reach 90%, and the polarization conversion rate can reach almost 100% at the designed operation frequency of 1 THz in simulation. Several samples have been fabricated and characterized, and the experimental results show a cross-polarized transmission of about 80% and a polarization conversion rate of almost 100% and agree well with the simulations.

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Antireflection-assisted all-dielectric terahertz metamaterial polarization converter

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