Magnetoplasmonic design rules for active magneto-optics

TL;DR

This paper establishes design principles for nanoscale active magnetoplasmonic devices that enable tunable and controllable magneto-optical Kerr effects across a broad spectrum, advancing integrated photonics.

Contribution

It introduces novel design rules for active magnetoplasmonic components, allowing precise control of Kerr response amplitude and sign at the nanoscale.

Findings

Design rules enable broad spectral tuning of Kerr response

Active magnetoplasmonic elements can be highly tunable

Potential for integration into nanoscale photonic devices

Abstract

Light polarization rotators and non-reciprocal optical isolators are essential building blocks in photonics technology. These macroscopic passive devices are commonly based on magneto-optical Faraday and Kerr polarization rotation. Magnetoplasmonics - the combination of magnetism and plasmonics - is a promising route to bring these devices to the nanoscale. We introduce design rules for highly tunable active magnetoplasmonic elements in which we can tailor the amplitude and sign of the Kerr response over a broad spectral range.