articleCommunications in Theoretical PhysicsFeb 23, 2023HYBRID OA

Active tunable terahertz bandwidth absorber based on single layer graphene

WLWenxin LiYYYingting YiHYHua YangSCShubo ChengWYWen‐Xing Yang

Yangtze University · Central South University · +5 more institutions

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Abstract

Abstract In this paper, an active tunable terahertz bandwidth absorber based on single-layer graphene is proposed, which consists of a graphene layer, a photo crystal plate, and a gold substrate. When the Fermi energy ( E f ) of graphene is 1.5 eV, the absorber shows high absorption in the range of 3.7 THz–8 THz, and the total absorption rate is 96.8%. By exploring the absorption mechanism of the absorber, the absorber shows excellent physical regulation. The absorber also shows good adjustability by changing the E f of graphene. This means that the absorber exhibits excellent tunability by adjusting the physical parameters and E f of the absorber. Meanwhile, the absorber is polarization independent and…

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297
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22.53
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100%
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47
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Authors

9

Topics & keywords

Topics
Keywords
  • Graphene
  • Terahertz radiation
  • Materials science
  • Optoelectronics
  • Bandwidth (computing)
  • Polarization (electrochemistry)
  • Absorption (acoustics)
  • Fermi energy
UN Sustainable Development Goals
  • Affordable and clean energy
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