Regensburg 2010 – scientific programme
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O: Fachverband Oberflächenphysik
O 87: Methods: Other (experimental)
O 87.5: Talk
Friday, March 26, 2010, 12:15–12:30, H42
Collinear Generation of ultrashort UV and XUV pulses for pump/probe spectroscopy — •Elisabeth Bothschafter1,2, Agustin Schiffrin1, Vladislav Yakovlev1,3, Ferenc Krausz1,3, Ralph Ernstorfer1,2, and Reinhard Kienberger1,2 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, D-85748 Garching, Germany — 2Lehrstuhl für Experimentalphysik I (E11) Technische Universität München, James Franck Strasse, D-85748 Garching, Germany — 3Department für Physik, Ludwig-Maximilians-Universität, Am Coulombwall 1, D-85748 Garching, Germany
The investigation of the dynamics of excited electronic states in molecular and solid state systems on the few femtosecond time scale is a veritable challenge and requires the availability of ultrashort pulses in different spectral domains.
For application in future UV pump/XUV probe experiments, we demonstrate and characterize the collinear generation of sub-4 fs ultraviolet (UV) pulses and attosecond extreme ultraviolet pulses (XUV) pulses via nonlinear interaction of a sub-1.5 cycle near infrared/visible (NIR) laser pulse with noble gas atoms. The combination of third-order and high harmonic generation in a setup comprising two subsequent gas targets in a single laser focus provides inherently synchronized UV pulses with a photon energy of ∼5 eV and a pulse energy of ∼1 µJ and XUV pulses with a cut-off photon energy of more than 120 eV and up to ∼107 photons.