Dresden 2014 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 100: Surface Dynamics II
O 100.1: Vortrag
Freitag, 4. April 2014, 10:30–10:45, PHY C 213
A short-pulse facility for time and angle-resolved photoemission experiments at the synchrotron light source DELTA — •Sven Döring1, 2, Stefan Cramm1, 2, Mathias Gehlmann1, 2, Lukasz Plucinski1, Markus Höner2, Holger Huck2, Maryam Huck2, Robert Molo2, Peter Ungelenk2, Shaukat Khan2, and Claus M. Schneider1 — 1PGI-6, Forschungszentrum Jülich — 2Zentrum für Synchrotronstrahlung, DELTA, TU Dortmund
At the synchrotron light source DELTA (TU Dortmund), a short-pulse facility is under commissioning. The U250 undulator of the storage ring is used to generate coherent sub-ps pulses at higher harmonics of a seeding laser. The VUV beamline BL5 operated by a group from PGI-6 (FZ Jülich) guides those pulses into an end-station that is optimized for angle and spin-resolved photoemission spectroscopy experiments. A part of the seeding laser pulse is brought into the end-station via a separate beamline and can be used as a pump beam for pump-probe experiments. With those time and angle-resolved photoemission experiments that are now feasible with this unique setup we will, in the near future, study magnetization dynamics of thin ferromagnetic films on metal surfaces.
The modifications of the photoemission setup that were necessary to conduct time-resolved experiments and the current status of the short-pulse facility will be described.