Symmetry breaking induced excitations of dark plasmonic modes in multilayer graphene ribbons

被引：10

作者：

Dai, Y. Y. ^{[1
,2
,3
]}

Chen, A. ^{[1
,2
,3
]}

Xia, Y. Y. ^{[1
,2
,3
]}

Han, D. Z. ^{[4
]}

Liu, X. H. ^{[1
,2
,3
]}

Shi, L. ^{[1
,2
,3
]}

Zi, J. ^{[1
,2
,3
]}

机构：

[1] Fudan Univ, Minist Educ, Dept Phys, Key Lab Micro & Nanophoton Struct, Shanghai 200433, Peoples R China

[2] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

[3] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[4] Chongqing Univ, Dept Appl Phys, Chongqing 400044, Peoples R China

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 18期

关键词：

FANO RESONANCE; METAMATERIALS; HYBRIDIZATION; NANORIBBONS; TERAHERTZ; ARRAYS;

D O I：

10.1364/OE.24.020021

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Multilayer graphene can support multiple plasmon bands. If structured into graphene ribbons, they can support multiple localized plasmonic modes with interesting optical properties. However, not all such plasmonic modes can be excited directly due to the constrains of the structural symmetry. We show by numerical simulations that by breaking the symmetry all plasmonic modes can be excited. We discuss the general principles and properties of two-layer graphene ribbons and then extend to multilayer graphene ribbons. In multilayer graphene ribbons with different ribbon widths, a tunable broadband absorption can be attained due to the excitations of all plasmonic modes. Our results suggest that these symmetry-broken multilayer graphene ribbons could offer more degrees of freedom in designing photonic devices. (C) 2016 Optical Society of America

引用

页码：20021 / 20028

页数：8

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