Transmission resonance in a composite plasmonic structure

TL;DR

This paper reports on the design and experimental observation of a novel transmission resonance in a composite plasmonic structure, explained by a ring-resonance induced dipole emission mechanism.

Contribution

It introduces a new type of transmission resonance in a composite plasmonic structure, supported by both theoretical modeling and experimental validation.

Findings

Identification of a new transmission resonance phenomenon

Experimental demonstration of the resonance in a plasmonic structure

Proposed mechanism explaining the resonance effect

Abstract

The design, fabrication, and optical properties of a composite plasmonic structure, a two-dimentional array of split-ring resonators inserted into periodic square holes of a metal film, have been reported. A new type of transmission resonance, which makes a significant difference from the conventional peaks, has been suggested both theoretically and experimentally. To understand this effect, a mechanism of ring- resonance induced dipole emission is proposed.