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Plasmonics

, Volume 14, Issue 6, pp 1303–1310 | Cite as

Multi-Band Terahertz Absorber at 0.1–1 THz Frequency Based on Ultra-Thin Metamaterial

  • Yu He
  • Qiannan WuEmail author
  • Shinong Yan
Article
First Online:

Abstract

In this letter, we design a terahertz (THz) multi-band absorber comprised of four square open/closed loops and a ring wall resonant metamaterial with a high absorption rate for TE and TM polarization. Based on resonant response of metamaterial, five different sizes of the metal rings could tune five absorption peaks to produce five-band absorbing performance in the frequency ranging from 0.1 to 1 THz. By comparing the absorber consisting of independent ring with multiple rings, the multi-band absorption could be demonstrated by increasing the number of metal rings. The simulation results are indicated that the multi-band absorbing of the THz absorber is independent of incident angle within a wide range. The design method of the absorber presented can not only provide a theoretical tool to perform diversity absorbing with multiple band and multi-absorption azimuth in terahertz communications, but also has potential for applications in THz imagers, detectors, sensors, and emitters.

Keywords

Multi-band absorber Metamaterial Finite difference frequency domain Terahertz communications 
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Notes

Funding Information

This work was supported by the National Natural Science Foundation of China (NSFC) (No. 61705200).

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of ScienceNorth University of ChinaTaiyuanChina

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