Curved trajectories on transformed metal surfaces: Luneburg lens, beam-splitter, invisibility carpet and black hole for surface plasmon polaritons

TL;DR

This paper demonstrates how transformational optics can be used to precisely control surface plasmon polariton trajectories on metal surfaces, enabling functionalities like beam splitting, cloaking, and lensing.

Contribution

It introduces novel designs for surface plasmon devices using transformational optics to achieve advanced control over plasmon trajectories.

Findings

Enhanced control of plasmon trajectories demonstrated

Designs for beam splitter, cloaking, and lensing on metal surfaces

Potential applications in plasmonic circuitry and sensing

Abstract

Transformational optics are shown to markedly enhance the control of the electromagnetic wave trajectories within metamaterials with unconventional functionalities such as a beam splitter, a toroidal carpet, a Luneburg lens and a black hole, all of which are specially designed for surface plasmon polaritons propagating on a metal plate