Unusual Resonators: Plasmonics, Metamaterials, and Random Media

TL;DR

This paper unifies the understanding of various electromagnetic phenomena like superresolution and wave localization by modeling them as interactions with open resonators, enabling better control and insight into these effects.

Contribution

It introduces a unified resonator model that describes diverse electromagnetic phenomena, providing new insights and control mechanisms for complex wave interactions.

Findings

Unified description of superresolution, transmission, absorption, and localization phenomena

Resonator parameters determine system behavior and control

Enhanced understanding of wave-resonator interactions

Abstract

Superresolution, extraordinary transmission, total absorption, and localization of electromagnetic waves are currently attracting growing attention. These phenomena are related to different physical objects and are usually studied within the context of different, sometimes rather sophisticated, physical approaches. Remarkably, all these seemingly unrelated phenomena owe their origin to the same underlying physical mechanism - wave interaction with an open resonator. Here we show that it is possible to describe all of these effects in a unified way, mapping each system onto a simple resonator model. Such description provides a thorough understanding of the phenomena, explains all the main features of their complex behaviour, and enables to control the system via the resonator parameters: eigenfrequencies, Q-factors, and coupling coefficients.