Reciprocal plasmonic metasurfaces: Theory and applications

TL;DR

This paper introduces reciprocal plasmonic metasurfaces with a simple, scalable design that enhances optical performance and enables multi-functional applications like sensing and lasing, supported by numerical and analytical analysis.

Contribution

It presents a novel reciprocal metasurface configuration that improves optical performance and simplifies fabrication compared to traditional designs.

Findings

Enhanced optical performance demonstrated

Supports multiple functionalities including sensing and lasing

Scalable fabrication process established

Abstract

A new configuration for metasurface construction is presented to achieve multi-functional capabilities including perfect absorption, bio/chem sensing, and surface-mode lasing. The reciprocal plasmonic metasurfaces discussed here are composed of two plasmonic surfaces of reciprocal geometries separated by a dielectric spacer. Compared to conventional metasurfaces this simple geometry exhibits an enhanced optical performance. The discussed reciprocal metasurface design further enables effective structural optimization and allows for a simple and scalable fabrication. The physical principle and potential applications of the reciprocal plasmonic metasurfaces are demonstrated using numerical and analytical approaches.