Waveguide-plasmon polaritons enhance transverse magneto-optical Kerr effect

Lars E. Kreilkamp, Vladimir I. Belotelov, Jessie Yao Chin, Stefanie Neutzner, Daniel Dregely, Thomas Wehlus, Ilya A. Akimov, Manfred Bayer, Bernd Stritzker & Harald Giessen
Magneto-optical effects in ferrimagnetic or ferromagnetic materials are usually too weak for potential applications. The transverse magneto-optical Kerr effect (TMOKE) in ferromagnetic films is typically on the order of 0.1%. Here, we demonstrate experimentally the enhancement of TMOKE due to the interaction of particle plasmons in gold nanowires with a photonic waveguide consisting of magneto- optical material, where hybrid waveguide-plasmon polaritons are excited. We achieve a large TMOKE that modulates the transmitted light intensity by...
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