Magnetic field modulation of plasmon properties

Abstract

Plasmonics has proven to be a powerful tool to improve the performance of optical devices. The possibility of modulating the emission, propagation and/or detection of radiation constitutes a promising aspect to expand the limits of the currently used technologies. In this sense, fast and contactless actuation on plasmon resonances via the Magneto-Optical (MO) effect has been put forward by the inclusion of ferromagnetic components into noble metal layers and nanostructures, yet up to now restricted to the visible and near-infrared ranges. Recently it has been shown that this magnetic field modulation can be extended to the mid -IR and THz region by the use of the Magneto-Refractive (MR) effect, i., a change in the optical properties of the system by magnetic field controlled electrical resistivity1,2,3 . In this talk we will review the effect that a magnetic field has on the plasmon properties and in particular this new alternative for magnetic modulation in the mid and far IR range using different plasmonic metasurfaces.