2024/08/06 by Xin Wang, Thilina Muthu-Arachchige, Wang, Xin +10 · 1 citation
Chemistry · Physics and Astronomy · Engineering · #Spectroscopy and Laser Applications #Advanced Optical Sensing Technologies #Optical Systems and Laser Technology
paper · pdf · doi:10.48550/arxiv.2408.03310
We present an experimental scheme for producing ultracold Ytterbium atoms in a compact dual-chamber setup. A dispenser-loaded two-dimensional (2D) magneto-optical trap (MOT) using permanent magnets and operating on the broad 1S0→ 1P1 singlet transition delivers over 107 atoms per second through a differential pumping stage into a three-dimensional (3D) MOT. The two-color 3D MOT uses the broad singlet transition to accumulate ∼ 2× 107 atoms of 174Yb within 2.5~s and subsequently the narrow 1S0→ 3P1 intercombination line to cool the atomic cloud to below 10~μK. We report optimized parameters for each stage of the atom collection sequence, achieving high transfer efficiency. We find that shelving into the triplet state during the broad-transition MOT almost doubles the number of trapped atoms.