Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 13: Trapping and Cooling of Atoms (joint session Q/A)
A 13.3: Talk
Tuesday, March 12, 2024, 11:45–12:00, HS 1221
Dipole trapping of mercury — •Sascha Heider, Thorsten Groh, and Simon Stellmer — Physikalisches Institut, Universität Bonn, Nußallee 12, 53115 Bonn, Germany
Mercury is the heaviest, non-radioactive laser-coolable element in the periodic table. With seven naturally occuring isotopes and deep UV transitions (185 nm) suitable for high resolution imaging, mercury is a promising candidate for realizing a future multipurpose quantum gas machine.
We already achieved laser cooling of all seven isotopes on the 1S0 → 3P1 (254 nm) transition to sub-Doppler temperatures and high atom numbers [PRA 105, 033106].
For further cooling we currently deploy a high power optical dipole trap (300 W at 1070 nm) to overcome the very low polarizability.
Keywords: dipole trap; laser cooling; ultracold atoms; UV transitions; quantum gas