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Dresden 2017 – scientific programme

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O: Fachverband Oberflächenphysik

O 76: Plasmonics and Nanooptics VII: Applications and Other Aspects

O 76.3: Talk

Wednesday, March 22, 2017, 15:30–15:45, TRE Ma

Plasmonic analog of electromagnetically induced absorption leads to giant thin-film Faraday rotation — •Dominik Floess, Mario Hentschel, Thomas Weiss, and Harald Giessen — 4th Physics Insitute and Research Centre SCoPE, University of Stuttgart, Stuttgart, Germany

We demonstrate the realization of a hybrid magnetoplasmonic thin film structure that resembles the classical optical analog of electromagnetically induced absorption. In transmission geometry our Au nanostructure embedded in an EuS film induces giant Faraday rotation of up to 14 for a thickness of below 150 nm for B=5 T. Crucial for our achievement is the introduction of EuS as a new material for magnetoplasmonics. At low temperatures, it enables the realization of complex magnetoplasmonic structure geometries, which would not be feasible with commonly used magneto-optic materials. Our concept will lead to important, highly integrated, non-reciprocal photonic devices for light modulation, optical isolation, and magnetic field optical sensing. The simple fabrication of EuS nanostructures also enables more sophisticated and intriguing future designs of magnetoplasmonic systems and three-dimensional magneto-optic metamaterials.

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