Fabrication of perfect plasmonic absorbers for blue and near-ultraviolet lights using double-layer wire-grid structures

Journal of the European Optical Society-Rapid Publications

Ryoga Tanaka¹  Atsushi Motogaito¹  Kazumasa Hiramatsu¹ 

[1] Graduate School of Engineering, Mie University, 1577 Kurima-machiya-cho, Tsu, Japan;

关键词: Plasmonic filter;    Perfect absorber;    Wire-grid structure;    Propagating surface plasmon;    Absorption;    Near-UV region;   

DOI  :  10.1186/s41476-021-00151-0

来源: Springer

【 摘 要 】

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.

【 授权许可】

CC BY