Silicon-coated gold nanodiffraction grating structures as plasmonic absorbers for short-wavelength infrared light

被引：2

作者：

Tsubota, Tatsuya ^{[1
]}

Arai, Naoyuki ^{[1
]}

Harada, Atsuya ^{[1
]}

Uesugi, Akio ^{[1
]}

Sugano, Koji ^{[1
]}

Isono, Yoshitada ^{[1
]}

机构：

[1] Kobe Univ, Grad Sch Engn, Dept Mech Engn, Kobe, Hyogo 6578501, Japan

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2021年 / 38卷 / 10期

基金：

日本学术振兴会;

关键词：

SPECTROSCOPY; QUALITY; TRANSMISSION;

D O I：

10.1364/JOSAB.427768

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

As a plasmonic absorber for short-wavelength infrared hyperspectral imaging, a silicon-coated gold nanodiffraction grating structure is proposed. This plasmonic absorber leads to absorption peaks in short-wavelength infrared region by the high refractive index of silicon coating on gold grating. It is relatively easy to fabricate with smaller size than those of already known absorbers. By performing fabrication, simulation, and measurement, we demonstrate the sharp absorption peaks of short-wavelength infrared light using only 400-1000 n m grating interval. We believe this miniaturized absorber will be able to be applied to hyperspectral imaging without a spectroscope owing to its sharp absorption peak at a specific wavelength. (C) 2021 Optical Society of America

引用

页码：2863 / 2872

页数：10