Multi-channel coherent perfect absorbers

被引：20

作者：

Bai, Ping ^{[1
,2
,3
]}

Wu, Ying ^{[3
]}

Lai, Yun ^{[1
,2
]}

机构：

[1] Soochow Univ, Coll Phys Optoelect & Energy, Suzhou 215006, Peoples R China

[2] Soochow Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou 215006, Peoples R China

[3] King Abdullah Univ Sci & Technol, Div Comp Elect & Math Sci & Engn, Thuwal 239556900, Saudi Arabia

来源：

EPL | 2016年 / 114卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ABSORPTION; ILLUMINATION; GRAPHENE;

D O I：

10.1209/0295-5075/114/28003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The absorption efficiency of a coherent perfect absorber usually depends on the phase coherence of the incident waves on the surfaces. Here, we present a scheme to create a multi-channel coherent perfect absorber in which the constraint of phase coherence is loosened. The scheme has a multi-layer structure such that incident waves in different channels with different angular momenta can be simultaneously and perfectly absorbed. This absorber is robust in achieving high absorption efficiency even if the incident waves become "incoherent" and possess "random" wave fronts. Our work demonstrates a unique approach to designing highly efficient metamaterial absorbers. Copyright (C) EPLA, 2016

引用

页数：4

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