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 language | English |
|---|---|
| Article number | 1950171 |
| Journal | Modern Physics Letters B |
| Volume | 33 |
| Issue number | 16 |
| DOIs | |
| State | Published - 10 Jun 2019 |
| Externally published | Yes |
Keywords
- Perfect metamaterial absorber
- diffraction grating
- guided-mode resonance
- tunable absorption spectrum
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