Broadband multifunctional metasurface based on voltage-tunable VO2

Lunhao Hu; Hao Xu

doi:10.1117/12.2689769

10 August 2023 Broadband multifunctional metasurface based on voltage-tunable VO2

Lunhao Hu, Hao Xu

Proceedings Volume 12748, 5th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2023); 127482D (2023) https://doi.org/10.1117/12.2689769
Event: 5th International Conference on Information Science, Electrical and Automation Engineering (ISEAE 2023), 2023, Wuhan, China

Abstract

THz metasurfaces that reflect radiation back can be applied in various fields such as imaging, biosensing, and optical communications. However, the conventional THz metasurfaces have limitations due to their inflexible electromagnetic responses and complex structures. In this paper, a voltage-controlled dual-polarization metasurface based on vanadium dioxide (VO2) is proposed, which can achieve the polarization conversion and transmission by controlling the conductivity of VO2 in the surface. The results show that when the VO2 is in the metal state, the metasurface can realize the circular polarization mode conversion in the range of 1.2-1.4 THz. While insulated, it will switch to the low-efficiency transmission conversion mode. Then, A broadband voltage-controlled OAM beam generator metasurface is designed, providing a method for realizing high performance multifunctional tunable metasurfaces in the THz band. This work has the potential to expand the practical applications of metasurfaces.

Citation Download Citation

Lunhao Hu and Hao Xu "Broadband multifunctional metasurface based on voltage-tunable VO2", Proc. SPIE 12748, 5th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2023), 127482D (10 August 2023); https://doi.org/10.1117/12.2689769

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KEYWORDS

Terahertz radiation

Electrical conductivity

Reflection

Metals

Polarization

Vanadium

Wavefronts

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