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MO: Fachverband Molekülphysik

MO 17: Posters 2: Cold Molecules and Clusters

MO 17.1: Poster

Mittwoch, 7. März 2018, 16:15–18:15, Orangerie

A high density source of cold, slow and rotationally pure polar molecules — •Manuel Koller, Thomas Gantner, Xing Wu ø, Martin Zeppenfeld, Sotir Chervenkov, and Gerhard Rempe — Max-Planck-Institut für Quantenoptik, Garching 85748, Germany

Cold polar molecules provide fascinating research possibilities in physics and chemistry. However, densities of cold and slow molecules, achieved in past experiments have been insufficient for many applications. By combining cryogenic buffer gas cooling and centrifuge deceleration we put an end to this problem. Our source delivers a record high flux exceeding 10¹⁰s⁻¹ and densities up to 10⁹cm⁻³ of internally cold polar molecules with a single state purity of up to 92% [1] at kinetic energies corresponding to less than 1K [2]. The generality of our method makes it applicable to a wide range of molecular species (ND₃, CH₃F, CHF₃, etc.). Beside enabling detailed collision studies our technique could serve as an ideal source for optoelectrical Sisyphus cooling and testing fundamental physics.
X. Wu et al., ChemPhysChem 2016, 17, 3631
X. Wu et al., Science 2017, 358, 645-648
ø Current address: Department of Physics, Yale University, New Haven, CT 06511, USA; Department of Physics, Harvard University, Cambridge, MA 02138, USA