Controlling Plasmonic Wave Packets in Silver Nanowires

Cao L. , Nome R. A. , MONTGOMERY J. M. , GRAY S. K. , SCHERER N. F.

NANO LETTERS, vol.10, no.9, pp.3389-3394, 2010 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 9
  • Publication Date: 2010
  • Doi Number: 10.1021/nl101285t
  • Title of Journal : NANO LETTERS
  • Page Numbers: pp.3389-3394


Three-dimensional finite-difference time-domain simulations were performed to explore the excitation of surface plasmon resonances in long silver (Ag) nanowires. In particular, we show that it is possible to generate plasmonic wave packets that can propagate along the nanowire by exciting superpositions of surface plasmon resonances. By using an appropriately chirped pulse, it is possible to transiently achieve localization of the excitation at the distal end of the nanowire. Such designed coherent superpositions will allow realizing spatiotemporal control of plasmonic excitations for enhancing nonlinear responses in plasmonic "circuits".