Terahertz Metamaterials with Semiconductor Split-Ring Resonators for Magnetostatic Tunability

TL;DR

This paper demonstrates that a metasurface made of semiconductor split-ring resonators can have its terahertz resonance frequencies continuously tuned using an external magnetic field, enabling dynamic control of terahertz metamaterials.

Contribution

It introduces a method for magnetostatic tuning of terahertz resonances in semiconductor split-ring resonator metasurfaces, advancing tunable metamaterial design.

Findings

Resonance frequencies are continuously tunable with magnetic field.

The metasurface can be extended to 3D metamaterials.

Tuning is achieved through external magnetic field orientation.

Abstract

We studied a metasurface constituted as a periodic array of semiconductor split-ring resonators. The resonance frequencies of the metasurface excited by normally incident light were found to be continuously tunable in the terahertz regime through an external magnetostatic field of suitable orientation. As such metasurfaces can be assembled into 3D metamaterials, the foregoing conclusion also applies to metamaterials comprising semiconductor split-ring resonators.