Manipulating the loss in electromagnetic cloaks for perfect wave absorption

被引：26

作者：

Argyropoulos, Christos ^{[1
]}

Kallos, Efthymios ^{[1
]}

Zhao, Yan ^{[1
]}

Hao, Yang ^{[1
]}

机构：

[1] Univ London, Dept Elect Engn, London E1 4NS, England

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 10期

关键词：

METAMATERIALS; FIELD;

D O I：

10.1364/OE.17.008467

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We examine several ways to manipulate the loss in electromagnetic cloaks, based on transformation electromagnetics. It is found that, by utilizing inherent electric and magnetic losses of metamaterials, perfect wave absorption can be achieved based on several popular designs of electromagnetic cloaks. A practical implementation of the absorber, consisting of ten discrete layers of metamaterials, is proposed. The new devices demonstrate super-absorptivity over a moderate wideband range, suitable for both microwave and optical applications. It is corroborated that the device is functional with a subwavelength thickness and, hence, advantageous compared to the conventional absorbers. (C) 2009 Optical Society of America

引用

收藏

页码：8467 / 8475

页数：9

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