Mainz 2026 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 24: Molecular Spectroscopy I
MO 24.3: Vortrag
Donnerstag, 5. März 2026, 11:45–12:00, P 204
Towards Light-Shift Spectroscopy of RbYb near the D1 line of Rb — •Céline Castor — Institut für Experimentalphysik, Heinrich-Heine-Universität Düsseldorf
Ultracold dipolar molecules constitute a promising system for the investigation of topics like ultracold chemistry, novel interactions in quantum gases, precision measurements and quantum information.
Here we report on experiments in our apparatus for the production of ultracold RbYb molecules. In our former setup photoassociation experiments near the D1 line of Rb were conducted. Our current setup constitutes an improvement of our old apparatus, where the interactions in RbYb and possible routes to molecule production have already been studied extensively, including two-photon photoassociation spectroscopy near the Yb intercombination line.
A major goal is the efficient production of ground state RbYb molecules. We employ optical dipole traps to transport individually cooled samples of Rb and Yb from their separate production chambers to a dedicated science chamber. Combining our results on photoassociation spectroscopy near the Rb D1 line and the Yb intercombination line, we present a conceptual approach for studying stronger bound states in the excited molecular potential 2Π1/2 using light-shift spectroscopy.
Keywords: ytterbium; rubidium; ultracold; spectroscopy; molecular