Heidelberg 2015 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 11: Posters 2: Novelties in Molecular Physics

MO 11.15: Poster

Dienstag, 24. März 2015, 17:00–19:00, C/Foyer

Laser cooling and trapping of decelerated SrF molecules — •Corine Meinema, Joost van den Berg, Sreekanth Mathavan, Artem Zapara, Lorenz Willmann, Klaus Jungmann, and Steven Hoekstra — University of Groningen, Netherlands

We are preparing a parity violation measurement in heavy diatomic molecules. Therefore we need ultracold (SrF) molecules in a well-defined quantum state. Molecules are created in a supersonic expansion and decelerated by a traveling-wave Stark decelerator. The decelerated molecules have a temperature of 150 mK and laser cooling will reduce this further. For most types of the molecules, laser cooling is not possible due to the many long-living rotational and vibrational states. However, SrF has an almost closed rovibrational transition, where laser cooling is possible. We designed an extension of the decelerator to give access to laser beams. On the poster we also show a way to increase the number of decelerated molecules by optical pumping.