Coupled edge plasmon modes of metal/dielectric multi-wedges

doi:10.1088/1674-1056/22/6/067303

Abstract We present a metallic/dielectric multi-wedge model to investigate the coupled edge plasmon modes (CEPMs), where all wedges have a common edge and the wave propagates along the edge direction. A general theoretical method valid to many practical structures is presented. The analytical dispersion relations of CEPMs in these structures are obtained and the CEPM properties are discussed with numerical results and the dispersion relations. For all structures mentioned in this paper, we find that the structures containing an even number of metallic wedges own four CEPMs and those with an odd-number of metallic wedges have two CEPMs. Further the periodic structures containing any odd number of periods and any even number of periods possess their common CEPMs, respectively.

Keywords: edge plasmon modes metallic/dielectric multi-wedge structures

Received: 25 August 2012
Revised: 24 November 2012
Accepted manuscript online:

PACS:	73.20.Mf	(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
	78.20.Ci	(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
	78.20.Bh	(Theory, models, and numerical simulation)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11074061) and the Natural Science Foundation of Heilongjiang Province, China (Grant No. ZD200913).

Corresponding Authors: Wang Xuan-Zhang
E-mail: xzwang696@126.com

Cite this article:

Wang Xuan-Zhang (王选章) Coupled edge plasmon modes of metal/dielectric multi-wedges 2013 Chin. Phys. B 22 067303

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Coupled edge plasmon modes of metal/dielectric multi-wedges

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