Optical LC-like resonances in high-index particles

TL;DR

This paper explores optical LC-like resonances in high-index dielectric particles, providing a new perspective on their electromagnetic behavior and a method to analyze their optical properties using equivalent circuit models.

Contribution

It introduces the concept of dielectric optical circuit analogies for high-index particles, enhancing understanding of their resonance effects and offering a new approach to study their optical properties.

Findings

Optical LC-like resonances are dominated by electromagnetic energy near the particle.

Dielectric optical circuit models help explain the resonance behavior.

The method facilitates studying optical properties of high-index particles.

Abstract

Electric LC resonances, occurring in metallic circuits, govern the motion of free electrons or electric signals. In this paper, optical LC-like resonances in high-index particles (HIPs) or dielectric LC resonances have been studied, which involve bounded electrons and optical fields instead. The resonance effect is dominated by optical analogues of inductance and capacitance, which can be determined according to the electromagnetic energy bounded near the particle. The viewpoint of dielectric optical circuit with equivalent parameters facilitates the understanding of dielectric resonance effect. The result also provides a method for studying the optical properties of the HIPs.