Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster: Quantum Optics and Photonics II
Q 42.9: Poster
Mittwoch, 13. März 2019, 16:15–18:15, S Atrium Informatik
Lasercooling of dysprosium — Niels Petersen1,2, •Marcel Trümper1, Florian Mühlbauer1, Gunther Türk1, Lykourgos Bougas3, Arijit Sharma3, Dmitry Budker1,3,4, and Patrick Windpassinger1,2 — 1QUANTUM, Institut für Physik, Johannes Gutenberg-Universität, 55099 Mainz, Germany — 2Graduate School Materials Science in Mainz, Staudingerweg 9, 55128 Mainz, Germany — 3Helmholtz-Institut Mainz, Johannes Gutenberg-Universität, Staudingerweg 18, 55128 Mainz, Germany — 4Department of Physics, University of California, Berkley, CA 94720-7300, USA
Dysprosium is a rare-earth element with one of the largest ground-state magnetic moments (10 Bohr magnetons) in the periodic table. Therefore, the dipole-dipole interaction is not a small perturbation but becomes comparable in strength to the s-wave scattering in ultracold dysprosium gases. The physical properties of the trapped atomic sample, such as its shape and stability are significantly influenced by the long-range and anisotropic dipole-dipole interaction.
This poster reports on the status of our experimental setup and highlights from recent activities in our laboratory. This includes results from sawtooth wave adiabatic passage (SWAP) cooling on dysprosium [1], where we demonstrated that SWAP can slow atoms twice as fast as conventional molasses cooling on the same transition. Further, we present a newly implemented optical dipole trap as well as results from spectroscopic studies on the 1001 nm ground state transition, where the excited state is predicted to have a lifetime of a few milliseconds.
[1] Petersen et al., arXiv:1809.06423, 2018