SAMOP 2023 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 13: Poster II

MO 13.13: Poster

Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof

Absorption spectroscopy and modeling laser cooling of barium monofluoride — •Felix Kogel, Marian Rockenhäuser, Einius Pultinevicius, and Tim Langen — 5. Physikalisches Institut, Universität Stuttgart

Cold molecular gases are the starting point for studies of cold chemistry, quantum simulation and precision measurements of fundamental physics. Here, we report on our effort towards direct laser cooling of BaF molecules. We perform high-resolution absorption spectroscopy to derive an improved set of molecular constants for the bosonic isotopologues ¹³⁸BaF and ¹³⁶BaF and use these constants to model laser cooling using simulations based on the optical Bloch equations. We find effective Doppler, sub-Doppler, and coherent cooling strategies for the bosonic, as well as for the fermionic BaF isotopologues. This provides important guidance for the corresponding experiments ongoing in our group, and paves the way for tests of fundamental symmetries using these molecules.