Subwavelength plasmonic kinks in arrays of metallic nanoparticles

TL;DR

This paper investigates nonlinear plasmonic effects in metallic nanoparticle arrays, revealing bistability and the ability to support subwavelength, tunable plasmonic kinks that propagate as dissipative switching waves.

Contribution

It introduces the concept of plasmonic kinks in nanoparticle arrays, demonstrating their properties and potential for subwavelength optical switching.

Findings

Arrays exhibit bistable optical response.

Support for subwavelength plasmonic kinks with tunable velocity.

Numerical analysis of kink propagation characteristics.

Abstract

We analyze nonlinear effects in optically driven arrays of nonlinear metallic nanoparticles. We demonstrate that such plasmonic systems are characterized by a bistable response, and they can support the propagation of dissipative switching waves (or plasmonic kinks) connecting the states with different polarization. We study numerically the properties of such plasmonic kinks which are characterized by a subwavelength extent and a tunable velocity.