Circularly polarized terahertz wave independently controlled tunable spin-decoupled metasurface

Yuping Zhang; Chunyang Jiang; Zhenkai Li; Xiaotong Sang; Jian Wang; Xiangzhe Sun; Shengjie Zhao; Bo Lu; Meng Liu; Huiyun Zhang

Results in Physics (Jan 2024)

Circularly polarized terahertz wave independently controlled tunable spin-decoupled metasurface

Yuping Zhang,
Chunyang Jiang,
Zhenkai Li,
Xiaotong Sang,
Jian Wang,
Xiangzhe Sun,
Shengjie Zhao,
Bo Lu,
Meng Liu,
Huiyun Zhang

Affiliations

Yuping Zhang: Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Chunyang Jiang: Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Zhenkai Li: Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Xiaotong Sang: Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Jian Wang: Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Xiangzhe Sun: Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Shengjie Zhao: Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Bo Lu: Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Meng Liu: Corresponding authors.; Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Huiyun Zhang: Corresponding authors.; Qingdao Key Laboratory of Terahertz Technology, College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China

Journal volume & issue: Vol. 56
p. 107287

Abstract

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The research and development of multifunctional metasurfaces has attracted much attention, and manipulating multifunctional devices with greater degrees of freedom is a continuing trend. In this study, we propose a tunable multifunctional metasurface with terahertz (THz) frequency and demonstrate it theoretically. By introducing the propagation phase decoupling conjugate response, we realize the independent control of beam deflection(deflection angle is 8.1°), beam splitting（split angle is 16.5°）, and vortex beam mode switching under different incident conditions. At the same time, by changing the Fermi level of the Dirac semimetal, the switching between different states under the same incident condition is realized. The results of this study are expected to contribute to promising applications in future for improving the capacity of THz communication systems, independently regulating multi-functional devices.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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