Hannover 2010 – wissenschaftliches Programm
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K: Fachverband Kurzzeitphysik
K 6: Poster
K 6.4: Poster
Donnerstag, 11. März 2010, 16:30–19:00, Lichthof
Lateral investigation of a filament by using a semi-inifinite gas cell — Emilia Schulz1,2, •Daniel S. Steingrube1,2, Thomas Binhammer1,3, Uwe Morgner1,2,4, and Milutin Kovacev1,2 — 1Instutut für Quantenoptik, Leibniz Universität Hannover, Germany — 2QUEST, Center for Quantum Engineering and Space-Time Research, Hannover, Germany — 3VENTEON Laser Technologies GmbH, Hannover, Germany — 4Laser Zentrum Hannover, Germany
The semi-infinite gas cell concept [1,2] is a promising geometry for high-order harmonic generation due to high conversion efficiency and the ability of handling relatively high pressure of several 100 mbar. We present a cell design which is capable to realize a pressure gradient from 1000 mbar argon to a vacuum pressure of below 10-4 mbar over a distance of about 1 cm. Beside harmonic generation at very high pressures this enables the lateral investigation of filaments in propagation direction. Self focusing and spectral broadening of the pulse during the filamentation process can now be investigated. First results are shown.
[1] N. Papadogiannis, Appl. Phys. B 73, 687-692 (2001)
[2] D. S. Steingrube, PRA 80, 043819 (2009)