Design of mid-infrared ultra-wideband metallic absorber based on circuit theory

被引：32

作者：

Arik, Kamalodin ^{[1
]}

Abdollahramezani, Sajjad ^{[1
]}

Farajollahi, Saeed ^{[1
]}

Khavasi, Amin ^{[1
]}

Rejaei, Behzad ^{[1
]}

机构：

[1] Sharif Univ Technol, Dept Elect Engn, POB 11555-4363, Tehran, Iran

来源：

OPTICS COMMUNICATIONS | 2016年 / 381卷

关键词：

Broadband absorber; Circuit model; Plasmonics; Subwavelength structures; ADAPTIVE SPATIAL-RESOLUTION; METAMATERIAL ABSORBER;

D O I：

10.1016/j.optcom.2016.07.014

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An ultra-broadband absorber of light is proposed by using periodic array of ultra-thin metallic ribbons on top of a lossless quarter-wavelength dielectric spacer placed on a metallic reflector. We propose a fully analytical circuit model for the structure, and then the absorber is duly designed based on the impedance matching concept. As a result, normalized bandwidth of 99.5% is realized by the proposed absorbing structure in mid-infrared regime. Performing a numerical optimization algorithm, we could also reach to normalized bandwidth of 103%. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：309 / 313

页数：5

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