2016/03/28 by Atmatzakis, Evangelos, Papasimakis, Nikitas, Fedotov, Vassili +2
#FOS: Physical sciences #Optics (physics.optics)
paper · doi:10.48550/arxiv.1603.08481
We demonstrate resonant Faraday polarization rotation in plasmonic arrays of bimetallic nano-ring resonators consisting of Au and Ni sections. This metamaterial design allows to optimize the trade-off between the enhancement of magneto-optical effects and plasmonic dissipation. Although Ni sections correspond to as little as ~6% of the total surface of the metamaterial, the resulting magneto-optically induced polarization rotation is equal to that of a continuous film. Such bimetallic metamaterials can be used in compact magnetic sensors, active plasmonic components and integrated photonic circuits.