Regensburg 2010 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 72: Plasmonics and Nanooptics VI

O 72.3: Vortrag

Donnerstag, 25. März 2010, 15:30–15:45, H32

Surface Plasmon Mapping using Photoelectron Emission Microscopy combined with Huygens principle — •Christian Schneider, Alexander Fischer, Martin Rohmer, Daniela Bayer, Pascal Melchior, and Martin Aeschlimann — Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern

Photoelectron emission microscopy (PEEM) is a very powerful tool to investigate electron dynamics simultaneously in time and space with femtosecond temporal and nanometer spatial resolution. This microscopy technique is also suitable to study plasmonic behaviour in metal nanostructures, which combines the advantages of photonics and electronics. In this talk, we will show PEEM measurements of structures exhibiting surface plasmon polariton (SPP) resonances and present a novel simulation method based on Huygens' principle. As only the beating between the exciting light wave and the SPP wave can be observed by PEEM, a direct access to the surface plasmon wave isn't possible. Applying the simple wave model of Huygens in combination with a fast and reliable fitting algorithm to the complex PEEM data allows us to recalculate the propagating SPP wave for different shaped nanostructures. Examples like gold-squares as well as L-shaped structures are presented.