Switchable vortex beam polarization state terahertz multi-layer metasurface

doi:10.1088/1674-1056/ac7cd2

中国物理B ›› 2022, Vol. 31 ›› Issue (11): 114201-114201.doi: 10.1088/1674-1056/ac7cd2

Switchable vortex beam polarization state terahertz multi-layer metasurface

Min Zhong(仲敏) and Jiu-Sheng Li(李九生)^†

Center for THz Research, China Jiliang University, Hangzhou 310018, China

收稿日期:2022-06-05 修回日期:2022-06-27 接受日期:2022-06-29 出版日期:2022-10-17 发布日期:2022-11-01
通讯作者: Jiu-Sheng Li E-mail:lijsh2008@126.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61871355, 61831012, and 62271460), the Talent Project of Zhejiang Provincial Department of Science and Technology, China (Grant No. 2018R52043), the Zhejiang Key Research and Development Project of China (Grant Nos. 2021C03153 and 2022C03166), and the Research Funds for the Provincial Universities of Zhejiang Province, China (Grant No. 2020YW20).

Switchable vortex beam polarization state terahertz multi-layer metasurface

Min Zhong(仲敏) and Jiu-Sheng Li(李九生)^†

Center for THz Research, China Jiliang University, Hangzhou 310018, China

Received:2022-06-05 Revised:2022-06-27 Accepted:2022-06-29 Online:2022-10-17 Published:2022-11-01
Contact: Jiu-Sheng Li E-mail:lijsh2008@126.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61871355, 61831012, and 62271460), the Talent Project of Zhejiang Provincial Department of Science and Technology, China (Grant No. 2018R52043), the Zhejiang Key Research and Development Project of China (Grant Nos. 2021C03153 and 2022C03166), and the Research Funds for the Provincial Universities of Zhejiang Province, China (Grant No. 2020YW20).

摘要/Abstract

摘要： We propose a switchable vortex beam polarization state terahertz multi-layer metasurface, which consists of three-layer elliptical metal crosses, four-layer dielectrics, and two-layer hollow metal circles, which are alternately superimposed. Under the normal incidence of left-handed circularly polarized (LCP) wave and the right-handed circularly polarized (RCP) waves, the proposed structure realizes three independent control functions, i.e., focused and vortex beam, vortex beam with different topological charges, and polarization states switching, and azimuth switching of two vortex beams with different polarization states. The results show that the proposed metasurface provides a new idea for investigating the multifunctional terahertz wave modulation devices.

关键词: terahertz wave, switchable vortex beam, polarization states, flexible manipulation

Abstract: We propose a switchable vortex beam polarization state terahertz multi-layer metasurface, which consists of three-layer elliptical metal crosses, four-layer dielectrics, and two-layer hollow metal circles, which are alternately superimposed. Under the normal incidence of left-handed circularly polarized (LCP) wave and the right-handed circularly polarized (RCP) waves, the proposed structure realizes three independent control functions, i.e., focused and vortex beam, vortex beam with different topological charges, and polarization states switching, and azimuth switching of two vortex beams with different polarization states. The results show that the proposed metasurface provides a new idea for investigating the multifunctional terahertz wave modulation devices.

Key words: terahertz wave, switchable vortex beam, polarization states, flexible manipulation

中图分类号: (Polarization)

42.25.Ja

74.25.Uv (Vortex phases (includes vortex lattices, vortex liquids, and vortex glasses)) 07.05.Tp (Computer modeling and simulation)

Min Zhong(仲敏) and Jiu-Sheng Li(李九生). Switchable vortex beam polarization state terahertz multi-layer metasurface[J]. 中国物理B, 2022, 31(11): 114201-114201.

Min Zhong(仲敏) and Jiu-Sheng Li(李九生). Switchable vortex beam polarization state terahertz multi-layer metasurface[J]. Chin. Phys. B, 2022, 31(11): 114201-114201.

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Switchable vortex beam polarization state terahertz multi-layer metasurface

Switchable vortex beam polarization state terahertz multi-layer metasurface

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