Low-loss Airy Surface Plasmon Polaritons

TL;DR

This paper introduces a method to significantly reduce the loss of Airy surface plasmon polaritons at dielectric-negative index metamaterial interfaces, enabling longer propagation distances through destructive interference effects.

Contribution

It presents a novel scheme leveraging destructive interference in NIMMs to suppress loss of Airy SPPs, achieving over six times longer propagation than traditional interfaces.

Findings

Loss of Airy SPPs can be suppressed near the NIMM lossless point.

Propagation distance of Airy SPPs is increased by more than six times.

Destructive interference between electric and magnetic responses reduces absorption.

Abstract

We propose a scheme to obtain a low-loss propagation of Airy surface plasmon polaritons (SPPs) along the interface between a dielectric and a negative-index metamaterial (NIMM). We show that, by using the transverse-magnetic mode and the related destructive interference effect between electric and magnetic absorption responses, the propagation loss of the Airy SPPs can be largely suppressed when the optical frequency is close to the lossless point of the NIMM. As a result, the Airy SPPs obtained in our scheme can propagate more than 6-time long distance than that in conventional dielectric-metal interfaces.