Dresden 2014 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 79: Plasmonics and Nanooptics IV
O 79.7: Vortrag
Donnerstag, 3. April 2014, 17:30–17:45, TRE Ma
Plasmonically enhanced thin film Faraday effect with up to 4 degrees rotation — •Dominik Floess1, Jessie Chin1, Akihito Kawatani1, Daniel Dregely1, Hanns-Ulrich Habermeier2, and Harald Giessen1 — 14th Physics Institute and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany — 2Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany
Light propagation is usually Lorentz-reciprocal. However, a static magnetic field along the propagation direction can break the Lorentz-reciprocity in the presence of magneto-optical (MO) materials. The Faraday effect in such materials rotates the polarization plane of light, and when light travels backward the polarization is further rotated. The enhancement of the Faraday rotation in MO thin films is of particular interest due to the demand of optical isolation devices in integrated optics. We hybridized MO materials with plasmonic structures and achieved 4 degrees of Faraday rotation for 200 nm thick structures. This large Faraday rotation is accompanied with a reasonably low relative insertion loss of 5.2 dB.