An Improved Design Formula for the Plasmonic Directional Beaming of Light

Abstract

An improved formula is suggested for the estimation of the diffraction angles of surface plasmon polaritons via dielectric or metal-dielectric ridge gratings. We propose on-axis and off-axis directional beaming structures designed by this formula and prove their appropriateness using rigorous numerical calculations. A plasmonic beam focusing structure is… (More)

Topics

5 Figures and Tables