Two-dimensionally localized modes of a nanoscale gap plasmon waveguide | Zendy

David Pile | Zendy; Toshiaki Ogawa | Zendy; Dmitri K. Gramotnev | Zendy; Yosuke Matsuzaki | Zendy; K. C. Ver | Zendy; K. Yamaguchi | Zendy; Takeshi Okamoto | Zendy; Masanobu Haraguchi | Zendy; M. Fukui | Zendy

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Two-dimensionally localized modes of a nanoscale gap plasmon waveguide

Author(s) -

David Pile,

Toshiaki Ogawa,

Dmitri K. Gramotnev,

Yosuke Matsuzaki,

K. C. Ver,

K. Yamaguchi,

Takeshi Okamoto,

Masanobu Haraguchi,

M. Fukui

Publication year - 2005

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2149971

Subject(s) - plasmon , excitation , dissipation , materials science , scattering , surface plasmon , dispersion (optics) , optics , waveguide , nanoscopic scale , optoelectronics , physics , nanotechnology , quantum mechanics , thermodynamics

We report numerical analysis and experimental observation of two-dimensionally localized plasmonic modes guided by a nano-gap in a thin metal film. Dispersion, dissipation and field structure of these modes are analyzed using the finite-difference time-domain algorithm. The experimental observation is conducted by the end-fire excitation of the proposed gap plasmon waveguides and detection of the generated modes using their edge scattering and CCD camera imaging. Physical interpretation of the obtained results is presented and origins of the described modes are discussed

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