Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 34: Poster Session I (Graphene; Plasmonics and nanooptics; Coherence and coherent control in nanophotonics and plasmonics)
O 34.33: Poster
Dienstag, 27. März 2012, 18:15–21:45, Poster E
ToF-PEEM on Metallic Structures using Attosecond XUV Pulses — •Soo Hoon Chew1,2, Frederik Süßmann2, Christian Späth1, Adrian Wirth2, Alexander Guggenmos1,2, Jürgen Schmidt1, Sergey Zherebtsov2, Kellie Pearce1, Andreas Oelsner3, Nils Weber4, James Kapaldo2, Alexander Gliserin1,2, Ferenc Krausz1,2, Mark Stockman5, Matthias Kling4, and Ulf Kleineberg1 — 1Department of Physics, Ludwig Maximilian University of Munich, Garching, Germany — 2Max Planck Institute of Quantum Optics, Garching, Germany — 3Surface Concept GmbH, Staudingerweg 7, 55128 Mainz, Germany — 4Focus GmbH, Hünstetten Kasselbach, 65510, Germany — 5Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia, 30303 USA
We report on the imaging of gold structures by time-of-flight-photoemission electron microscopy (ToF-PEEM) in combination with extreme ultraviolet (XUV) attosecond pulses from a high harmonic generation (HHG) source. Characterization of lithographically fabricated gold structures using these ultrashort XUV pulses by ToF-PEEM shows a spatial resolution of 200 nm. Energy-filtered imaging of the secondary electrons resulting in reduced chromatic aberrations as well as microspectroscopic identification of core and valence band electronic states have been successfully proven. We also find that the fast valence band electrons are not infuenced by the space charge effects, which is essentially important for attosecond nanoplasmonic field microscopy realization.