Stuttgart 2012 – scientific programme

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MO: Fachverband Molekülphysik

MO 4: Cold Molecules I

MO 4.5: Talk

Monday, March 12, 2012, 15:00–15:15, V38.03

Two-Photon-Spectroscopy of YbRb-Towards paramagnetic molecules — Frank Münchow, •Cristian Bruni, Maximilian Madalinski, and Axel Görlitz — Institut für Experimentalphysik, HHU Düsseldorf, 40225 Düsseldorf

Ultracold heteronuclear molecules offer fascinating perspectives ranging from ultracold chemistry to novel interactions in quantum gases. Here we report on the spectroscopic investigation of vibrational levels in the electronic ground state of the heteronuclear molecule ¹⁷⁶Yb⁸⁷Rb. Using two-photon photoassociation spectroscopy in a laser-cooled mixture of ¹⁷⁶Yb and ⁸⁷Rb we are able to determine the binding energies of weakly-bound vibrational levels. By means of Autler-Townes spectroscopy we obtain transition rates between vibrational levels of different molecular states. This knowledge is a crucial step towards the realization of YbRb ground state molecules.