Erlangen 2018 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 39: Precision Spectroscopy VI - neutrals and ions (joint session A/Q)

A 39.5: Vortrag

Donnerstag, 8. März 2018, 15:15–15:30, K 1.016

Spectroscopy of the 6S_1/2 → 5D_5/2 electric quadrupole transition of atomic cesium — •Sebastian Pucher, Alexandre Dareau, Philipp Schneeweiss, and Arno Rauschenbeutel — VCQ, TU Wien – Atominstitut, Stadionallee 2, 1020 Wien, Austria

The 6S_1/2 → 5D_5/2 electric quadrupole transition of cesium is studied experimentally via Doppler-free spectroscopy in hot vapor. The hyperfine structure of this transition is resolved, and the line intensities and optical pumping dynamics are analyzed. In an additional experiment, the lifetime of the 5D_5/2 state is determined by recording the fluorescence light associated to the decay of atoms from the intermediate 6P_3/2 state to the electronic ground state, in excellent agreement with literature values. Based on these results, we plan future experiments with laser-cooled atoms close to surfaces, e.g., in order to enhance the quadrupole coupling.