Microscopic origin of surface-plasmon radiation in plasmonic band-gap nanostructures

D. S. Kim, S. C. Hohng, V. Malyarchuk, Y. C. Yoon, Y. H. Ahn, K. J. Yee, J. W. Park, J. Kim, Q. H. Park, C. Lienau

Research output: Contribution to journalArticlepeer-review

209 Citations (Scopus)

Abstract

We report spatial domain measurements of the damping of surface-plasmon excitations in metal films with periodic nanohole arrays. The measurements reveal a short coherent propagation length of a few [Formula presented] inside nanohole arrays, consistent with delays of about 10 fs in ultrafast transmission experiments. This implies that the transmission spectra of the entire plasmonic band-gap structure are homogeneously broadened by radiative damping of surface-plasmon excitations. We show that a Rayleigh-like scattering of surface plasmons by the periodic hole array is the microscopic origin of this damping, allowing the reradiation rate to be controlled.

Original languageEnglish
JournalPhysical review letters
Volume91
Issue number14
DOIs
Publication statusPublished - 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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