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Tunable narrow band perfect metamaterial absorber based on guided-mode resonance

  • School of Astronautics, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

The tunable narrow band perfect metamaterial absorber (PMA) based on guided-mode resonance (GMR) for the visible spectral region is proposed. The PMA is composed of a one-dimensional grating layer, two waveguide layers and an Ag substrate. Tunable narrow band PMAs are designed using rigorous coupled-wave analysis by comparing the GMR effects for the filters and absorbers. Afterwards, two tunable PMA samples are fabricated through thin-film deposition and ultraviolet lithographic patterning. Finally, the reflection spectra of the fabricated PMA samples are measured. The absorption spectra obtained by subtracting the measured reflection spectra from 1 are consistent with the theory.

Original languageEnglish
Article number1950171
JournalModern Physics Letters B
Volume33
Issue number16
DOIs
StatePublished - 10 Jun 2019
Externally publishedYes

Keywords

  • Perfect metamaterial absorber
  • diffraction grating
  • guided-mode resonance
  • tunable absorption spectrum

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