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Frontiers of Information Technology & Electronic Engineering >> 2021, Volume 22, Issue 3 doi: 10.1631/FITEE.2000079

Graphene-metasurface for wide-incident-angle terahertz absorption

Affiliation(s): Center for THz Research, China Jiliang University, Hangzhou 310018, China; State Grid Sichuan Electric Power Company, Chengdu 610041, China; less

Received: 2020-04-06 Accepted: 2021-03-08 Available online: 2021-03-08

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Abstract

We demonstrate a structure for tunable wide-incident-angle terahertz wave absorption, which involves depositing planar arrays of on a silicon dioxide substrate. We also discuss how the graphene Fermi-level layer and various substrates affect the absorption characteristics. The absorption of the proposed is above 80% at an incident angle of 0°–60° in frequencies ranging from 0.82 to 2.0 THz. Our results will be very beneficial in the application of terahertz wave communications and biomedical imaging/sensing systems.

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