Spiral surface plasmon modes on uniform and tapered metallic nanorods

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6 Citations (Scopus)

Abstract

Spiral surface plasmon (SSP) modes on uniform and tapered silver nanorods are explored by performing both simulations and theoretical analyses. On a uniform nanorod with a radius equal to 240 nm, the SSP modes can be generated by linearly superposed higher-order HE1 and H2 eigenmodes. Both the single- and triple-stranded SSP modes are produced by controlling the relative rotation direction of the two component modes. On a tapered nanorod, the spiral pitch of the SSP mode decreases with the reduction of nanorod radius. However, the field energy density along the nanorod axis increases to a maximum value and then falls.

Original languageEnglish
Pages (from-to)2529-2534
Number of pages6
JournalJournal of the Optical Society of America B: Optical Physics
Volume30
Issue number9
DOIs
Publication statusPublished - 2013 Sep 1

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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