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arXiv · 1207.3697

Influence of the magnetic field on the plasmonic properties of transparent Ni anti-dot arrays

Emil Melander·Erik Östman·Janine Keller·Jan Schmidt·Evangelos Th. Papaioannou·Vassilios Kapaklis·Unnar B. Arnalds·B. Caballero·A. García-Martín·J. C. Cuevas·Björgvin Hjörvarsson
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Abstract

Extraordinary optical transmission is observed due to the excitation of surface plasmon polaritons (SPPs) in 2-Dimensional hexagonal anti-dot patterns of pure Ni thin films, grown on sapphire substrates. A strong enhancement of the polar Kerr rotation is recorded at the surface plasmon related transmission maximum. Angular resolved reflectivity measurements under an applied field, reveal an enhancement and a shift of the normalized reflectivity difference upon reversal of the magnetic saturation (transverse magneto-optical Kerr effect-TMOKE). The change of the TMOKE signal clearly shows the magnetic field modulation of the dispersion relation of SPPs launched in a 2D patterned ferromagnetic Ni film.

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Emil Melander, Erik Östman, Janine Keller, Jan Schmidt, Evangelos Th. Papaioannou, Vassilios Kapaklis, Unnar B. Arnalds, B. Caballero, A. García-Martín, J. C. Cuevas, Björgvin Hjörvarsson. 2012-07-16. Influence of the magnetic field on the plasmonic properties of transparent Ni anti-dot arrays. https://doi.org/10.1063/1.4742931

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