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Q: Quantenoptik und Photonik

Q 10: Ultrakalte Moleküe

Q 10.1: Vortrag

Samstag, 5. März 2005, 09:00–09:15, HU Kinosaal

Rb₂ photoassitiation using shaped fs-laser pulses — •W. Salzmann¹, U. Poschinger¹, R. Wester¹, M. Weidemüller¹, A. Lindinger², M. Plewicki², F. Vetter², A. Merli², S. Weber², and L. Wöste² — ¹Physikalisches Institut, Universität Freiburg, Herrmann-Herder-Str. 3, 79104 Freiburg i.Br. — ²Freie Universität Berlin, Fachbereich Physik, Arnimallee 14 , 14195 Berlin

We report on an experiment where we use a shaped fs-laser to photoassociate ultracold Rubidium atoms into the molecular electronic ground state. A second fs-laser is used to convert the molecules into Rb₂⁺ ions which are identified via time-of-flight[1]. In order to optimize the pulse shape of the photoassociation laser a genetic algorithm is applied in the scheme of a coherent control experiment[2]. The experimental results are presented. This work is performed in a collaboration between the University of Freiburg and the Freie Universität Berlin.

[1]C. Gabbanini et. al., PRL 84, No.13, 2814 (2000)

[2]S. Vadja et. al., Chem. Phys., No.267, 231 (2001)

[3]C. Koch et. al., PRA 70, 013402 (2004)