Enhancing the capture velocity of a Dy magneto-optical trap with two-stage slowing

Abstract

Magneto-optical traps (MOTs) based on the $626\mathrm{nm}$, $136\mathrm{kHz}$-wide intercombination line of Dy, which has an attractively low Doppler temperature of $3.3\mu \mathrm{K}$, have been implemented in a growing number of experiments over the last several years. A challenge in loading these MOTs comes from their low capture velocities. Slowed atomic beams can spread out significantly during free-flight from the Zeeman slower to the MOT position, reducing the fraction of the beam captured by the MOT. Here we apply, for the first time in a Dy experiment, a scheme for enhancing the loading rate of the MOT wherein atoms are Zeeman-slowed to a final velocity larger than the MOT's capture velocity, and then undergo a final stage of slowing by a pair of near-detuned beams addressing the $421\mathrm{nm}$ transition directly in front of the MOT. By reducing the free-flight time of the Zeeman-slowed atomic beam, we greatly enhance the slowed flux delivered to the MOT, leading to more than an order of magnitude enhancement in the final MOT population.

arXiv comment6 pages, 3 figures

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Cited by in corpus (18)

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• A two-dimensional magneto-optical trap of dysprosium atoms as a compact source for efficient loading of a narrow-line three-dimensional magneto-optical trap
• Speeding Up Particle Slowing using Shortcuts to Adiabaticity
• Can the dipolar interaction suppress dipolar relaxation?
• Maximizing the capture velocity of molecular magneto-optical traps with Bayesian optimization
• Comprehensive characterization of an apparatus for cold electromagnetic dysprosium dipoles
• New opportunites for interactions and control with ultracold lanthanides
• Two-color Ytterbium MOT in a compact dual-chamber setup
• A Compact Dual-Beam Zeeman Slower for High-Flux Cold Atoms
• Efficient cooling of high-angular-momentum atoms
• Improving the spectroscopic knowledge of neutral Neodymium
• Single-atom imaging of ${}^{173}$Yb in optical tweezers loaded by a five-beam magneto-optical trap
• Experimental Scheme for Polarizing the Boron Nuclei
• Two-color magneto-optical trapping of ytterbium atoms
• Dissipationless tune-out trapping for a lanthanide-alkali quantum gas mixture