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Q: Fachverband Quantenoptik und Photonik
Q 10: Quantum Optics and Nuclear Quantum Optics I
Q 10.7: Vortrag
Montag, 10. März 2025, 18:45–19:00, AP-HS
Upper-level spectroscopy of cold trapped 174Yb atoms for their preparation in the metastable 3P0 state — •Ke Li, Gabriel Dick, Saran Shaju, Dmitriy Sholokhov, and Jürgen Eschner — Universität des Saarlandes, Experimentalphysik, 66123 Saarbrücken, Germany
We trap and cool 174Yb atoms in a magneto-optical trap (MOT) inside a high-finesse cavity [1] for exploring atom-cavity interaction on the 1S0 – 3P0 clock transition at 578 nm [2]. For populating the metastable 3P0 level, we employ repumping lasers resonantly driving the 3P1 – 3S1 and 3P2 – 3S1 transitions, thereby transferring all atoms to 3P0 via the 3S1 level. We study the time-resolved repumping process to characterize and optimize its efficiency. The detuning-dependent population dynamics include coherent population trapping phenomena.
[1] H. Gothe et al., Phys. Rev. A, 99, 0134 15, 2019.
[2] D. Meiser et al., Phys. Rev. Lett. 102, 163601, 2009.
Keywords: Cold atoms; MOT; laser spectroscopy; optical pumping; cavity QED