Theoretical and experimental investigation of strongly localized plasmons on triangular metal wedges for subwavelength waveguiding

D. F P Pile, T. Ogawa, D. K. Gramotnev, T. Okamoto, M. Haraguchi, M. Fukui, Shigeki Matsuo

Research output: Contribution to journalArticle

243 Citations (Scopus)

Abstract

We report numerical analysis and experimental observation of strongly localized plasmons guided by a triangular metal wedge. Dispersion and dissipation of such wedge plasmons are analyzed using the finite-difference time-domain algorithm. Experimental observation is conducted by the end-fire excitation and near-field detection of the predicted plasmons on a 40° silver nanowedge. Good agreement with the theoretically predicted propagation distances is demonstrated. Differences between the theoretical and experimental field distribution are explained by insufficient resolution of the near-field optical probe.

Original languageEnglish
Article number061106
JournalApplied Physics Letters
Volume87
Issue number6
DOIs
Publication statusPublished - 2005
Externally publishedYes

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plasmons
wedges
near fields
metals
numerical analysis
dissipation
silver
propagation
probes
excitation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Theoretical and experimental investigation of strongly localized plasmons on triangular metal wedges for subwavelength waveguiding. / Pile, D. F P; Ogawa, T.; Gramotnev, D. K.; Okamoto, T.; Haraguchi, M.; Fukui, M.; Matsuo, Shigeki.

In: Applied Physics Letters, Vol. 87, No. 6, 061106, 2005.

Research output: Contribution to journalArticle

Pile, D. F P ; Ogawa, T. ; Gramotnev, D. K. ; Okamoto, T. ; Haraguchi, M. ; Fukui, M. ; Matsuo, Shigeki. / Theoretical and experimental investigation of strongly localized plasmons on triangular metal wedges for subwavelength waveguiding. In: Applied Physics Letters. 2005 ; Vol. 87, No. 6.
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