中国物理B ›› 2013, Vol. 22 ›› Issue (6): 67303-067303.doi: 10.1088/1674-1056/22/6/067303

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Coupled edge plasmon modes of metal/dielectric multi-wedges

王选章   

  1. Key Laboratory for Photonic and Electronic Band-Gap Materials, National Ministry of Education, and School of Physics and Electronic Engineering,Harbin Normal University, Harbin 150025, China
  • 收稿日期:2012-08-25 修回日期:2012-11-24 出版日期:2013-05-01 发布日期:2013-05-01
  • 基金资助:
    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).

Coupled edge plasmon modes of metal/dielectric multi-wedges

Wang Xuan-Zhang (王选章)   

  1. Key Laboratory for Photonic and Electronic Band-Gap Materials, National Ministry of Education, and School of Physics and Electronic Engineering,Harbin Normal University, Harbin 150025, China
  • Received:2012-08-25 Revised:2012-11-24 Online:2013-05-01 Published:2013-05-01
  • Contact: Wang Xuan-Zhang E-mail:xzwang696@126.com
  • Supported by:
    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).

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摘要： 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.

关键词: edge plasmon modes, metallic/dielectric, multi-wedge structures

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.

Key words: edge plasmon modes, metallic/dielectric, multi-wedge structures

中图分类号:  (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

  • 73.20.Mf
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)