Active Mid IR plasmonics using giant magneto resistance

Abstract

Plasmonics has proven as a powerful tool to improve the performance of mid-­¿IR devices, resulting in plasmon assited quantum cascade lasers, plasmon enhanced light detection, plasmonic beam steering, plasmonic thermal emiters or plasmonic nanoantenas for vibrational spectroscopy. In this scenario, the possibilityof modulatingtheemission,propagation and/or detection of mid-­¿IR radiation constitutes a promising aspect to expand thelimitsof the currently used technologies. In this sense, fast and contactless actuation on plasmon resonances via the Magneto-­¿Optical (MO) effecthas 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.