Mode-matching metasurfaces: coherent reconstruction and multiplexing of surface waves

TL;DR

This paper introduces a versatile metasurface that enables tailored reconstruction and multiplexing of surface plasmon waves, allowing selective generation based on light wavelength or polarization, bridging free-space optics and surface plasmonics.

Contribution

The work presents a generic, ultra-thin metasurface design for coherent reconstruction and multiplexing of surface waves, a novel approach in surface plasmonics.

Findings

Enables selective generation of surface plasmon waves

Demonstrates versatile interface between free-space optics and surface plasmonics

Provides a generic design adaptable to different wavelengths and polarizations

Abstract

Metasurfaces are promising two-dimensional metamaterials that are engineered to provide unique properties or functionalities absent in naturally occurring homogeneous surfaces. Here, we report a type of metasurface for tailored reconstruction of surface plasmon waves from light. The design is generic in a way that one can selectively generate different surface plasmon waves through simple variation of the wavelength or the polarization state of incident light. The ultra-thin metasurface demonstrated in this paper provides a versatile interface between the conventional free-space optics and a two-dimensional platform such as surface plasmonics.