Structured surface plasmon generated with interfered evanescent waves

Abstract

This work introduces an interesting configuration for exciting structured surface plasmon-polaritons (SSPP) by analyzing wave propagation on a composite dielectric-metal surface. In particular, we focus on the coupling of interfered evanescent waves with structured SPP. This innovative approach unlocks new avenues for enhancing plasmon optics models, encompassing diffraction, interference, and focalization. By exploring the potential of this configuration, we improved the understanding and application of structured SPP in various optical phenomena.