J. Eur. Opt. Soc.-Rapid Publ.
Volume 17, Number 1, 2021
|Number of page(s)
|20 April 2021
Fabrication of perfect plasmonic absorbers for blue and near-ultraviolet lights using double-layer wire-grid structures
Graduate School of Engineering, Mie University, 1577 Kurima-machiya-cho, Tsu, Japan
Accepted: 4 April 2021
This study proposes using double-layer wire-grid structures to create narrow-band, perfect plasmonic absorbers, which depend on polarization, for the short-wavelength visible and near-ultraviolet regions of the electromagnetic spectrum. A rigorous coupled-wave analysis reveals that the maximum absorption attained using Ag and Al is ~ 90% at 450 and 375 nm. Experiments using Ag yielded results similar to those predicted by simulations. These results demonstrate that narrow-band perfect plasmonic absorbers, which depend on the polarization, can be realized at 450 and 375 nm using Ag or Al.
Key words: Plasmonic filter / Perfect absorber / Wire-grid structure / Propagating surface plasmon / Absorption / Near-UV region
© The Author(s) 2021
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