Work

Strong Coupling of Surface Plasmon Polaritons in Monolayer Graphene Sheet Arrays

Year: 2012

Type: article

Abstract: Here we investigate theoretically and numerically the coupling between surface plasmon polaritons (SPPs) in monolayer graphene sheet arrays that have a period much smaller than the wavelength. We show that when the collective SPP is excited with an out-of-phase illumination, the beam tends to propagate toward the opposite direction of the Bloch momentum, reflecting a negative coupling between the constituent SPPs. In contrast, for in-phase illumination, the incident beam is split into two collective SPPs that are highly collimated and display low propagation loss. Moreover, the coupling between the individual SPPs results in a reduction of the modal wavelength of the SPP in comparison with that of a single graphene sheet.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.109.073901

Authors: Bing Wang, Xiang Zhang, Francisco J. García-Vidal, Xiaocong Yuan, Jinghua Teng

Institutions: Agency for Science, Technology and Research, Institute of Materials Research and Engineering, Wuhan University, Universidad Autónoma de Madrid, Nankai University

Language: English

Topic: Plasmonic and Surface Plasmon Research

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Agency for Science, Technology and Research, FP7 Ideas: European Research Council

Awards: Frontiers in Plasmonics: Transformation Optics, Quantum and Non-linear phenomena"", G3910137393