Dresden 2009 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 27: Poster Session I (Methods: Scanning probe techniques; Methods: Atomic and electronic structure; Methods: Molecular simulations and statistical mechanics; Oxides and Insulators: Clean surfaces; Oxides and Insulators: Adsorption; Oxides and Insulators: Epitaxy and growth; Semiconductor substrates: Clean surfaces; Semiconductor substrates: Epitaxy and growth; Semiconductor substrates: Adsorption; Nano- optics of metallic and semiconducting nanostructures; Electronic structure; Methods: Electronic structure theory; Methods: other (experimental); Methods: other (theory); Solutions on surfaces; Epitaxial Graphene; Surface oder interface magnetism; Phase transitions; Time-resolved spectroscopies)
O 27.70: Poster
Dienstag, 24. März 2009, 18:30–21:00, P2
Analysis Tools for Time-Resolved Two-Photon Photoelectron Microscopy of Excitations in Metal Nanostructures — Martin Aeschlimann1, Michael Bauer2, Daniela Bayer1, Tobias Brixner3, Stefan Cunovic4, Frank Dimler3, Alexander Fischer1, Walter Pfeiffer4, Martin Rohmer1, Christian Schneider1, Felix Steeb1, •Christian Strüber4, and Dmitri V. Voronine3 — 1University of Kaiserslautern, Kaiserslautern, Germany — 2University of Kiel, Kiel, Germany — 3Ludwigs-Maximilian-Universität, Würzburg, Germany — 4University of Bielefeld, Bielefeld, Germany
The application of coherent control schemes in nanooptics aims for steering the temporal and spatial evolution of localized excitations. Polarization shaped laser pulses allow tailoring the local excitation of a nanostructure simultaneously with subwavelength spatial resolution and femtosecond timing [1,2]. The investigation of the temporal evolution of the optical near-field is based on time-resolved two-photon photoemission microscopy (TR-2P-PEEM). In such experiments spatial resolution in the nm-scale requires long-term positioning stability of the acquired PEEM patterns. Here, methods are introduced that allow eliminating artefacts because of sample drift. In addition we present the methodology for time-resolved cross correlation measurements using polarization shaped pulses as pump excitation and bandwidth-limited probe pulses.
[1] T. Brixner et al. Phys. Rev. Lett. 95 (2005) 093901.
[2] M. Aeschlimann et al. Nature 446 (2007) 301