Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 72: Ultrakalte Moleküle II (gemeinsam mit MO)
Q 72.3: Vortrag
Freitag, 23. März 2007, 14:45–15:00, 6J
Formation and Detection of ultracold LiCs molecules — •Jörg Lange, Stephan Kraft, Johannes Deiglmayr, Christian Giese, Leif Vogel, Christian Glück, Peter Staanum, Roland Wester, and Matthias Weidemüller — Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
We report on the first observation of ultracold LiCs molecules, formed by the trapping light in a double species magneto optical trap. After one-colour two-photon ionization, the molecules are detected with high resolution time-of-flight mass spectrometry. The molecule formation rate coefficient is found to be in the range of 10−18 cm3 s−1 to 10−16 cm3 s−1 [1]. This is an order of magnitude smaller than for other heteronuclear alkali dimers formed under comparable condtions, but in agreement with predictions.
In current experiments, we study controlled photoassociation via the [Li(2S3/2)+Cs(6P3/2)]-asymptote to increase the production rate of electronic ground state molecules. Together with a more detailed investigation of the resonantly enhanced two-photon ionization process, precise information on the rovibrational structure of the involved LiCs-potentials can be obtained.
[1] S. D. Kraft et al., J. Phys. B 39, S 993 (2006)
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