Rostock 2019 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 10: Posters 1: Cold Molecules, High Resolution Spectroscopy, and Theory

MO 10.4: Poster

Dienstag, 12. März 2019, 16:30–18:30, S Foyer LLM

Building a Zeeman slower for CaF molecules — •Mariia Stepanova, Paul Kaebert, Maurice Petzold, Mirco Siercke, and Silke Ospelkaus — Institut für Quantenoptik, Leibniz Universität Hannover

We will report on our progress towards realizing a large flux source of ultracold Calcium monofluoride (CaF) molecules using molecular Zeeman slowing. We will give details of our test experiment, demonstrating the feasibility of the technique using ³⁹K. As a first step to implementing our method in molecules we have constructed and characterized a cryogenic buffer gas source, capable of producing molecules with a mean velocity of 150m/s. By comparing our results to simulations using computational fluid dynamics we will discuss several ways to improve on our initial buffer gas cell design, and present data on the molecular flux using our improved cell geometry. Because sufficient laser power is essential for efficient Zeeman slowing of molecules, we will also present data on generating a high power beam of 606nm Laser light through sum frequency generation. By combining all these systems, we hope to finally give current experiments the source they need to produce a quantum degenerate gas of ultracold molecules.