Magneto-optical response in bimetallic metamaterials

Nanophotonics

article

Evangelos Atmatzakis¹  Nikitas Papasimakis¹  Vassili Fedotov¹  Guillaume Vienne²  Nikolay I. Zheludev¹ 

[1] Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton;Data Storage Institute, Agency for Science, Technology and Research (A*STAR);School of Electrical and Electronic Engineering, Nanyang Technological University;The Photonics Institute and Centre for Disruptive Photonic Technologies, Nanyang Technological University

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

DOI  :  10.1515/nanoph-2016-0162

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 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】

CC BY