Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 60: Poster Session IV (Solid/liquid interfaces; Semiconductors; Oxides and insulators; Graphene; Plasmonics and nanooptics; Electronic Structure; Surface chemical reactions; Heterogeneous catalysis)
O 60.77: Poster
Mittwoch, 16. März 2011, 17:30–21:00, P4
Plasmon propagation in structural and dieletric controlled gold films probed by phase-resolved PEEM — •Christoph Lemke1, Till Leißner1, Christian Schneider2, Martin Aeschlimann2, and Michael Bauer1 — 1Institut für Experimentelle und Angewandte Physik, Universität Kiel — 2Fachbereich Physik, Technische Universität Kaiserslautern
In a phase-resolved photoemission electron microscopy experiment, the near field associated with propagating surface plasmon polaritons (SPP) can be locally sensed via interference with the excitation laser field [1]. Here we apply this technique to monitor and analyze SPP propagation in gold films where the plasmonic response is controlled by structural design via e-beam lithography as well as by dielectric loading. Phase resolved simulations based on Huygens principle allow us to reconstruct SPP properties such as group velocity, damping, direction of propagation.
[1] A. Kubo, N. Pontius, and H. Petek, Nano Lett. 7, (2007) 470