Graphene Plasmon Waveguiding and Hybridization in Individual and Paired Nanoribbons

被引：656

作者：

Christensen, Johan ^{[1
]}

Manjavacas, Alejandro ^{[1
]}

Thongrattanasiri, Sukosin ^{[1
]}

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

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

机构：

[1] IQFR CSIC, Madrid 28006, Spain

[2] ICFO Inst Ciencies Foton, Barcelona 08860, Spain

来源：

ACS NANO | 2012年 / 6卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

plasmonics; graphene plasmons; nanophotonics; waveguides; nanoribbons; ELECTRON-ENERGY-LOSS; LOSSY METAL-FILMS; FINITE-WIDTH; BOUND MODES; NANOPARTICLES; DISPERSION;

D O I：

10.1021/nn2037626

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Plasmons in doped graphene exhibit relatively large confinement and long lifetime compared to noble-metal plasmons. Here, we study the propagation properties of plasmons guided along individual and interacting graphene nanoribbons. Besides their tunability via electrostatic gating, an additional handle to control these excitations Is provided by the dielectric environment and the relative arrangement of the interacting waveguides. Plasmon interaction and hybridization in pairs of neighboring aligned ribbons are shown to be strong enough to produce dramatic modifications in the plasmon field profiles. We introduce a universal scaling law that considerably simplifies the analysis an understanding of these plasmons. Our work provides the building blocks to construct graphene plasmon circuits for future compact plasmon devices with potential application to optical signal processing, infrared sensing, and quantum information technology.

引用

页码：431 / 440

页数：10

共 61 条

[1] Low Temperature Raman Study of the Electron Coherence Length near Graphene Edges [J].