Non-magnetic negative-refraction systems for terahertz and far-infrared frequencies

TL;DR

This paper shows that naturally occurring materials can be used to create non-magnetic negative refraction systems for terahertz and far-infrared frequencies, enabling low-loss devices.

Contribution

It introduces a novel approach to achieve negative refraction using homogeneous natural materials at THz and far-IR frequencies.

Findings

Homogeneous natural materials can form negative refractive index systems.

The proposed structures operate away from resonance, reducing losses.

Potential for low-loss terahertz and far-infrared devices.

Abstract

We demonstrate that homogeneous naturally-occurring materials can form non-magnetic negative refractive index systems, and present specific realizations of the proposed approach for the THz and far-IR frequencies. The proposed structure operates away from resonance, thereby promising the capacity for low-loss devices.