Toroidal Response in Dielectric Metamaterials

TL;DR

This paper demonstrates a dielectric metamaterial with a dominant toroidal response in the THz regime, achieved through coupling of Mie-resonance modes in LiTaO3 cylinders, enabling resonant total transmission.

Contribution

It introduces a novel dielectric cluster design that exhibits a strong toroidal response in the THz regime, advancing metamaterial applications.

Findings

Successful demonstration of toroidal response in dielectric metamaterials

Achieved resonant total transmission in the THz regime

Low-loss performance of the proposed metamaterial

Abstract

We present and analyze a dielectric cluster based on subwavelength LiTaO3 polaritonic cylinders for demonstrating toroidal response in THz regime due to mutual coupling of Mie- resonance modes of the cylinders. Based on this cluster, we demonstrate a low-loss metamaterial with the dominant toroidal response, which plays a key role in achieving resonant total transmission.