Journal
ADVANCED OPTICAL MATERIALS
Volume 7, Issue 14, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201801420
Keywords
effective medium theory; Faraday effect; metamaterials; nonreciprocity
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Funding
- US Army Research Office [W911NF-16-1-0261]
- Engineering and Physical Sciences Research Council (UK)
- European Research Council iPLASMM project [321268]
- Royal Society
- Wolfson Foundation
- EPSRC [EP/H000917/2, EP/J018457/1, EP/M013812/1] Funding Source: UKRI
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Magneto-optical effects are at the heart of modern technologies providing opportunities for polarization control in laser physics and optical communications, metrology, and in high-density data storage. Here a new type of a hyperbolic magneto-optical metamaterial based on Au-Ni nanorod arrays is developed. The metamaterial exhibits an enhanced magneto-optical response with large rotation of the polarization plane and nonreciprocal light transmission. The effective medium model that incorporates both plasmonic and magneto-optical phenomena in complex multicomponent nanorod media is proposed and validated. The experimental and theoretical results indicate that the magneto-optical response of the nanostructured metamaterial is drastically enhanced and spectrally modified with respect to bulk ferromagnetic media due to interplay between strong anisotropy and magnetic field induced polarization rotation.
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