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Multi-Band High-Efficiency Multi-Functional Polarization Controller Based on Terahertz Metasurface

Authors :
Huaijun Chen
Wenxia Zhao
Xuejian Gong
Lianlian Du
Yunshan Cao
Shilong Zhai
Kun Song
Source :
Nanomaterials, Vol 12, Iss 18, p 3189 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

Electromagnetic metasurfaces with excellent electromagnetic wave regulation properties are promising for designing high-performance polarization control devices, while the application prospect of electromagnetic metasurfaces is limited because of the current development situations of the complex structure, low conversion efficiency, and narrow working bandwidth. In this work, we design a type of reflective terahertz metasurface made of a simple structure that can achieve multiple polarization modulation with high efficiency. It is shown that the presented metasurface can realize ultra-broadband, cross-polarization conversion with the relative working bandwidth reaching 94% and a conversion efficiency of over 90%. In addition, the proposed metasurface can also efficiently accomplish different polarization conversion functions, such as linear-to-linear, linear-to-circular, or circular-to-linear polarization conversion in multiple frequency bands. Due to the excellent properties, the designed metasurface can be used as a high-efficiency multi-functional polarization modulation device, and it has important application value in terahertz imaging, communication, biological detection, and other fields.

Details

Language :
English
ISSN :
20794991
Volume :
12
Issue :
18
Database :
Directory of Open Access Journals
Journal :
Nanomaterials
Publication Type :
Academic Journal
Accession number :
edsdoj.0853dbf17e942eb8c25777601b01fb9
Document Type :
article
Full Text :
https://doi.org/10.3390/nano12183189