Subwavelength Modulational Instability and Plasmon Oscillons in Nanoparticle Arrays

Roman E. Noskov, Pavel A. Belov, and Yuri S. Kivshar

Phys. Rev. Lett. 108, 093901 – Published 28 February 2012

Abstract

We study modulational instability in nonlinear arrays of subwavelength metallic nanoparticles and analyze numerically nonlinear scenarios of the instability development. We demonstrate that modulational instability can lead to the formation of regular periodic or quasiperiodic modulations of the polarization. We reveal that such nonlinear nanoparticle arrays can support long-lived standing and moving oscillating nonlinear localized modes—plasmon oscillons.

Received 21 September 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.093901

Authors & Affiliations

Roman E. Noskov¹, Pavel A. Belov¹, and Yuri S. Kivshar^1,2

¹National Research University of Information Technologies, Mechanics and Optics (ITMO), St. Petersburg 197101, Russia
²Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia