Tunable dual-band absorber based on graphene structures with a chipped wheel in the terahertz range

Zhenting Tian; Yunping Qi; Xiangxian Wang

doi:10.1117/12.2679389

18 July 2023 Tunable dual-band absorber based on graphene structures with a chipped wheel in the terahertz range

Zhenting Tian, Yunping Qi, Xiangxian Wang

Proceedings Volume 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023); 1272222 (2023) https://doi.org/10.1117/12.2679389
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 2023, Hangzhou, China

Abstract

It would be possible to tune a dual-band terahertz absorber that has the polarization property and angle-insensitive is lifted in this paper, which is a typical sandwich structure consisting of a graphene structure with a chirped wheel sitting on top of the top layer, an insulating medium placed in the middle and a bottom layer gold ground plane. Simulation results show that there are two absorption peaks at 1.69THz and 4.49THz, with absorptivity of 98.73% and 99.68%, respectively. At resonant frequencies, these two absorption peaks could be varied dynamically by rescaling the graphene's chemical potential,thereby providing a novel method for developing actively tuned terahertz absorbers.

Citation Download Citation

Zhenting Tian, Yunping Qi, and Xiangxian Wang "Tunable dual-band absorber based on graphene structures with a chipped wheel in the terahertz range", Proc. SPIE 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 1272222 (18 July 2023); https://doi.org/10.1117/12.2679389

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KEYWORDS

Graphene

Absorption

Polarization

Electric fields

Gold

Electrical conductivity

Absorption spectrum

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