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Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 25: Ultracold Plasmas and Rydberg Systems (with Q)

A 25.2: Vortrag

Mittwoch, 8. März 2017, 15:00–15:15, P 104

Towards a strongly interacting gas of cold strontium Rydberg atomsIngo Nosske1, Luc Couturier1, Chang Qiao1, Fachao Hu1, •Jan Blume1,2, Canzhu Tan1, Peng Chen1, Yuhai Jiang1,3, and Matthias Weidemüller1,21University of Science and Technology of China, Shanghai Institute for Advanced Studies, Xiupu Road 99, 201315 Shanghai, China — 2Physikalisches Institut, Universität Heidelberg, Germany — 3Shanghai Advanced Research Institute, Chinese Academy of Sciences,

We aim to create a gas of ultracold strontium Rydberg atoms. Our laser cooling strategy, with the goal of reaching temperatures and densities close to quantum degeneracy [1], involves a side-loaded 2D MOT followed by 3D broad-band and narrow-band MOTs. The strontium atoms will be excited to triplet Rydberg states via a narrow singlet-triplet intercombination line.
Here we present our latest experimental progress including the realization of our strontium 2D MOT, as well as a characterization of the locking scheme of our cooling laser which addresses the broad 5s2  1S0 − 5s5p  1P1 transition of strontium at 461 nm. The locking scheme is based on a commercial wavelength meter (HighFinesse WSU10) with which an absolute frequency stability of a few MHz has been achieved.
Simon Stellmer, Rudolf Grimm, and Florian Schreck. "Production of quantum-degenerate strontium gases." Physical Review A 87.1 (2013): 013611.9.5 571-586 (2014)

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