Regensburg 2013 – scientific programme

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O: Fachverband Oberflächenphysik

O 36: Poster Session II (Organic films and electronics, photoorganics; Nanostructures; Plasmonics and nanooptics, Surface chemical reactions and heterogeneous catalysis, Surface dynamics )

O 36.29: Poster

Tuesday, March 12, 2013, 18:15–21:45, Poster B2

Surface plasmon travelling on a metallic stripe with nanometric constriction — •Golaleh Ghafoori, Daniel Benner, Johannes Boneberg, Paul Leiderer, and Elke Scheer — Department of Physics, University of Konstanz, Germany

We study the propagation of surface plasmons on a 4µm wide gold stripe of thickness 100nm by FDTD (Finite Difference Time Domain) simulations. For the excitation we use an optimized grating in the stripe. The surface plasmons propagate towards and across a constriction. We study the transmission over the constriction for different constriction shapes and as a function of the polarization. These studies allow the determination of local intensities in experiments with mechanically controllable break-junctions under light irradiation.