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Darmstadt 2008 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 24: Ultrakalte Moleküle [gemeinsam mit MO]

Q 24.3: Talk

Tuesday, March 11, 2008, 17:00–17:15, 3G

Photoassociation of ultracold LiCs — •Christian Glück, Jörg Lange, Johannes Deiglmayr, Stephan Kraft, Karin Mörtlbauer, Anna Grochola, Roland Wester, and Matthias Weidemüller — Albert-Ludwigs Universität, Physikalisches Institut, Hermann-Herder-Str. 3, 79104 Freiburg i.Brsg., Germany

We recently demonstrated the formation of ultracold LiCs molecules by the trapping light of a double species magneto optical trap [1]. After spontaneous decay into the electronic ground state and one-color two-photon ionization, the molecular ions are detected by a high-resolution time-of-flight mass spectrometer [2].

Here we present the active photoassociation of ultracold LiCs molecules, leading to a significantly increased production rate. Photoassociation resonances in the B1Π potential correlated to the 2S1/2-6P3/2 asymptote are identified and the ro-vibrational state distribution of the produced ground state molecules is discussed. The perspectives for the production of LiCs molecules in the absolute ground state are evaluated and future experiments with an ultracold gas of polar LiCs molecules are outlined.
[1] S. D. Kraft et al., J. Phys. B 39, S993

[2] S. D. Kraft et al., to appear in Applied Physics B

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