Magneto-optical response in bimetallic metamaterials

Nanophotonics

Vienne Guillaume¹  Zheludev Nikolay I.²  Atmatzakis Evangelos²  Papasimakis Nikitas²  Fedotov Vassili² 

[1] Data Storage Institute, Agency for Science, Technology and Research (A*STAR), Singapore 117608, Singapore;Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton, Southampton SO17 1BJ, UK;

关键词: magnetoplasmonics;    metamaterials;    metasurfaces;    bimetallic;    Faraday rotation;   

DOI  :  10.1515/nanoph-2016-0162

来源: DOAJ

【 摘 要 】

We demonstrate resonant Faraday polarization rotation in plasmonic arrays of bimetallic nano-ring resonators consisting of Au and Ni sections. This metamaterial design allows the optimization of the trade-off between the enhancement of magneto-optical effects and plasmonic dissipation. Nickel sections corresponding to as little as ~6% of the total surface of the metamaterial result in magneto-optically induced polarization rotation equal to that of a continuous nickel film. Such bimetallic metamaterials can be used in compact magnetic sensors, active plasmonic components, and integrated photonic circuits.

【 授权许可】

Unknown