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Graphene plasmon waveguiding and hybridization in individual and paired nanoribbons

Graphene plasmon waveguiding and hybridization in individual and paired nanoribbons
Graphene plasmon waveguiding and hybridization in individual and paired nanoribbons
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.
1936-0851
431-440
Christensen, Johan
57ceb605-dc34-4c7b-ae49-5fa9ceb52da8
Manjavacas, Alejandro
4be9f6f6-2641-4352-8508-33d99566eacd
Thongrattanasiri, Sukosin
24d4678f-b0c0-4591-b9ed-9554d6181065
Koppens, Frank H.L.
258ec1c2-33b9-4bf9-a8db-295d9cea043a
García de Abajo, F.Javier
07e3df24-ab3b-4a70-af18-188db066aa1a
Christensen, Johan
57ceb605-dc34-4c7b-ae49-5fa9ceb52da8
Manjavacas, Alejandro
4be9f6f6-2641-4352-8508-33d99566eacd
Thongrattanasiri, Sukosin
24d4678f-b0c0-4591-b9ed-9554d6181065
Koppens, Frank H.L.
258ec1c2-33b9-4bf9-a8db-295d9cea043a
García de Abajo, F.Javier
07e3df24-ab3b-4a70-af18-188db066aa1a

Christensen, Johan, Manjavacas, Alejandro, Thongrattanasiri, Sukosin, Koppens, Frank H.L. and García de Abajo, F.Javier (2011) Graphene plasmon waveguiding and hybridization in individual and paired nanoribbons. ACS Nano, 6 (1), 431-440. (doi:10.1021/nn2037626).

Record type: Article

Abstract

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.

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More information

Published date: 6 December 2011
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 337809
URI: http://eprints.soton.ac.uk/id/eprint/337809
ISSN: 1936-0851
PURE UUID: 54acf9b5-57bd-4db9-b261-d9f730d4baa1

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Date deposited: 03 May 2012 15:36
Last modified: 14 Mar 2024 10:58

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Contributors

Author: Johan Christensen
Author: Alejandro Manjavacas
Author: Sukosin Thongrattanasiri
Author: Frank H.L. Koppens
Author: F.Javier García de Abajo

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