Complete Optical Absorption in Periodically Patterned Graphene

被引：1128

作者：

Thongrattanasiri, Sukosin ^{[1
]}

Koppens, Frank H. L. ^{[2
]}

Javier Garcia de Abajo, F. ^{[1
,3
]}

机构：

[1] IQFR CSIC, Madrid 28006, Spain

[2] ICFO Inst Ciencies Fotoniques, Castelldefels 08860, Barcelona, Spain

[3] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

PHOTONIC CRYSTALS; LIGHT-SCATTERING; BAND-STRUCTURE; TRANSMISSION; REFLECTION; ABSORBER; FILMS;

D O I：

10.1103/PhysRevLett.108.047401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that 100% light absorption can take place in a single patterned sheet of doped graphene. General analysis shows that a planar array of small particles with losses exhibits full absorption under critical-coupling conditions provided the cross section of each individual particle is comparable to the area of the lattice unit cell. Specifically, arrays of doped graphene nanodisks display full absorption when supported on a substrate under total internal reflection and also when lying on a dielectric layer coating a metal. Our results are relevant for infrared light detectors and sources, which can be made tunable via electrostatic doping of graphene.

引用

页数：5

共 33 条

[1] Total absorption of an electromagnetic wave by an overdense plasma [J].