Extraordinary transmission induced by defects in semitransparent screens

TL;DR

This paper develops an analytical theory showing that extraordinary optical transmission can occur in semi-transparent screens with various defects, expanding the understanding of EOT beyond perforated structures.

Contribution

The paper introduces a new analytical framework demonstrating EOT in screens with arbitrary defects, not limited to perforations or slits.

Findings

EOT occurs in screens with opaque defects.

The theory applies to metallic and dielectric screens.

EOT broadens to non-perforated, defect-loaded screens.

Abstract

In this letter we present an analytical theory of Extraordinary optical transmission (EOT) through semi-transparent screens, such as thin metallic plates or high permittivity dielectric slabs. Using this theory we show that EOT appears not only for screens perforated by holes or slits, but also for screens loaded by any defects, including opaque defects. These results widen the scope of EOT concept, opening up the way to the study of new physical effects.