Hamburg 2009 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 13: Molekülphysik Poster 1
MO 13.12: Poster
Dienstag, 3. März 2009, 16:30–19:00, VMP 8 Foyer
Fragmentation of CO Molecules in Ultra-short, CEP stabilized Laser Pulses — •Manuel Kremer1, Artem Rudenko2, Bettina Fischer1, Ram Gopal1, Konstantin Simeonidis1, Kai-Uwe Kühnel1, Oliver Herrwerth3, Adrian Wirth3, Sergey Zherebtsov3, Matthias Lezius3, Matthias Kling3, Ferenc Krausz3, Claus Dieter Schröter1, Robert Moshammer1, and Joachim Ullrich1 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany — 2Max-Planck Advanced Study Group within CFEL, Notkestrasse 85, 22607 Hamburg, Germany — 3Max-Planck-Institut für Quantenoptik, Hans Kopfermannstr. 1, 85748 Garching, Germany
We present fully differential data on single and double ionization of CO molecules in ultra short (4fs), linearly polarized, intense (up to 1PW/cm2) laser pulses measured with a *Reaction Microscope*.
Depending on the carrier-envelope-phase (CEP) of the laser pulses we see strong changes in the momentum distributions and emission directions of created C+ and C++ ions. This is a clear indication for geometrical alignment of the molecule in the ultra short pulse.
The CEP-dependent asymmetry parameters (A=NL−NR/NL+NR, where NL and NR means the number of fragments emitted to the left and to the right hemisphere, respectively) for dissociation (CO → C+ + O) and Coulomb explosion (CO → C+ + O+) exhibit a phase shift of about π/2 with respect to each other. Experimental results and first interpretations will be presented.