Multiband terahertz absorbers using t-shaped slot-patterned graphene and its complementary structure

Kai Da Xu, Yijun Cai, Xianbo Cao, Yingjiang Guo, Yongliang Zhang, Qiang Chen

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A dual-band absorber using monolayer periodically T-shaped slot-patterned graphene at terahertz frequencies is presented. By changing the dimensions or Fermi levels of the T-shaped slot-patterned graphene, both of the two absorption bands will be adjusted. The absorber has the characteristics of polarization independence and incident angle insensitivity. Also, its complementary structure, i.e., using periodically T-shaped strip-patterned graphene, is investigated to design another dual-band absorber. Moreover, two triband absorbers are studied through periodically loading four more T-shaped slots and complementary strips in square graphene lattices, respectively. This paper provides a significant paradigm for designing different graphene-based absorbers with multiple absorption bands.

Original languageEnglish
Pages (from-to)3034-3040
Number of pages7
JournalJournal of the Optical Society of America B: Optical Physics
Volume37
Issue number10
DOIs
Publication statusPublished - 2020 Oct

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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