Rostock 2019 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 10: Posters 1: Cold Molecules, High Resolution Spectroscopy, and Theory
MO 10.10: Poster
Dienstag, 12. März 2019, 16:30–18:30, S Foyer LLM
Cavity design for spatial resolved detection of cold molecules — •Jannis Schnars1,2, Alessandro Zenesini2, Silke Ospelkaus2, and Klemens Hammerer1 — 1Leibniz Universität Hannover, Institut für Theoretische Physik, 30167 Hannover — 2Leibniz Universität Hannover, Institut für Quantenoptik, 30167 Hannover
Ultracold polar molecules offer promising research perspectives in particular due to their strong dipole-dipole interactions. Recently there has been tremendous progress in the creation and manipulation of ultracold polar molecules. The highest phase space densities have been achieved by associating molecules from ultracold ensembles of atoms in a controlled way. However, when it comes to imaging, established techniques for the destructive and non-destructive imaging of atoms fail for molecules due to the complex structure of molecules with vibrational and rotational degrees of freedom. Typically, imaging of ultracold molecules is therefore achieved by reversing the creation process of ultracold molecules and subsequently image atoms on an atomic cycling transition. However, it would be desirable to directly imaging molecules, ideally non-destructively and with high spatial resolution. Here we present a scheme to detect molecules inside a 2D-optical lattice. The detection relies on an induced phase shift due to off-resonant light matter interaction. The phase shift is enhanced by a small-waist multimode cavity. We identify possible resonator geometries which balance the requirements for a small beam waist and the need to support several frequency degenerate transverse mode facilitating spatial resolution of several lattice sites.