Dual-polarization controllable terahertz wave metasurface

IF 2.5 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Computational Electronics Pub Date : 2025-02-26 DOI:10.1007/s10825-025-02294-6

Jiu-Sheng Li, Feng-Lei Guo, Ri-Hui Xiong

引用次数: 0

Abstract

Metasurfaces can flexibly regulate terahertz wave, but most of reported results are limited to single polarized terahertz wavefront manipulation. In this article, the propose metasurface can manipulate linearly polarized and circularly polarized terahertz waves. It consists of five metal layers (namely metal rectangular bars, metal rings, two orthogonal metal gratings, and I-shaped metal layers) separated by four polyimide dielectric layers. For circularly polarized wave incidence, the metasurface generates vortex beams with topological charges of l = ± 1 and l = ± 2 at frequency of 1.2 THz. In addition, the metasurface achieves “T” shaped near-field image at 0.931 THz. Under linearly polarized wave incidence, the metasurface produces polarization conversion with a conversion ratio over 98% within the frequency range of 0.6–0.8 THz. The proposed structure has potential application prospects in terahertz wave multi-polarized manipulation in future terahertz wireless communication.

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双偏振可控太赫兹波超表面

超表面可以灵活地调节太赫兹波，但大多数报道的结果仅限于单极化太赫兹波前操纵。本文提出的超表面可以处理线极化和圆极化的太赫兹波。它由四个聚酰亚胺介电层隔开的五个金属层（即金属矩形棒、金属环、两个正交金属光栅和i形金属层）组成。对于圆极化波入射，超表面在1.2太赫兹频率下产生拓扑电荷为l =±1和l =±2的涡旋光束。此外，超表面在0.931 THz下获得了“T”形近场像。在线极化波入射下，超表面在0.6 ~ 0.8太赫兹频率范围内产生了98%以上的极化转换。该结构在未来太赫兹无线通信中对太赫兹波的多极化处理具有潜在的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Computational Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-PHYSICS, APPLIED

CiteScore

4.50

自引率

4.80%

发文量

142

审稿时长

>12 weeks

期刊介绍： he Journal of Computational Electronics brings together research on all aspects of modeling and simulation of modern electronics. This includes optical, electronic, mechanical, and quantum mechanical aspects, as well as research on the underlying mathematical algorithms and computational details. The related areas of energy conversion/storage and of molecular and biological systems, in which the thrust is on the charge transport, electronic, mechanical, and optical properties, are also covered. In particular, we encourage manuscripts dealing with device simulation; with optical and optoelectronic systems and photonics; with energy storage (e.g. batteries, fuel cells) and harvesting (e.g. photovoltaic), with simulation of circuits, VLSI layout, logic and architecture (based on, for example, CMOS devices, quantum-cellular automata, QBITs, or single-electron transistors); with electromagnetic simulations (such as microwave electronics and components); or with molecular and biological systems. However, in all these cases, the submitted manuscripts should explicitly address the electronic properties of the relevant systems, materials, or devices and/or present novel contributions to the physical models, computational strategies, or numerical algorithms.