Berlin 2008 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 87: Symposium: Beyond Optical Wavelengths: Time-Resolved Spectroscopy of Surface Dynamics with EUV and XUV Radiation III (Invited Speakers: Christian Spielmann, Matias Bargheer, Philippe Wernet)
O 87.4: Vortrag
Freitag, 29. Februar 2008, 10:45–11:00, HE 101
Surface High Harmonic Generation: A route to ultra-intense attosecond pulses — •Rainer Hörlein1,2, Yutaka Nomura1, Brendan Dromey3, Paraskevas Tzallas4, Jens Osterhoff1, Zsuzsanna Major1,2, Stefan Karsch1, Dimitris Charalambidis4, Matthew Zepf3, Ferenc Krausz1,2, and George D. Tsakiris1 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany — 2Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany — 3Department of Physics and Astronomy, Queen's University Belfast BT7 1NN, UK — 4Foundation for Research and Technology Hellas, Institute of Electronic Structure and Laser, Heraklion Crete
High harmonic generation from solid surfaces (SHHG) constitutes a route towards generating very high harmonics (HH) and ultra intense attosecond pulses. In contrast to the generation of high harmonics from gases the SHHG mechanism is not limited in the laser intensity that can be used. On the contrary, the conversion efficiency and harmonic cutoff scale very favorably with driving laser intensity.
We present recent experimental results on the generation and characterization of HH radiation from solid targets. We present, amongst others, the generation of diffraction limited harmonic beams at 40nm and show our progress towards the temporal characterization of HHs from surfaces.
We also present an outlook towards possible applications of surface HHs as ultra-intense attosecond XUV probe beams for experiments.