Light assisted collisions in ultra-cold Tm atoms

Abstract

We studied light assisted collisions of Tm atoms in a magneto optical trap (MOT) for the first time, working on a weak cooling transition at 530.7 nm $(4f^{13}{(}^2{F}^0)6s^2,J=7/2,F=4$ to $4f^{12}{(}^3{H}_6)5d_{5/2}6s^2,J=9/2,F=5)$. We observed a strong influence from radiation trapping and light assisted collisions on the dynamics of this trap. We carefully separated these two contributions and measured the binary loss rate constant at different laser powers and detuning frequencies near the cooling transition. Analyzing losses from the MOT, we found the light assisted inelastic binary loss rate constant to reach values of up to $\beta =10^{-9}$ cm${}^3$/s and gave the upper bound on a branching ratio $k<0.8\times 10^{-6}$ for the 530.7 nm transition.

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Cited by in corpus (11)

• Dipolar physics: A review of experiments with magnetic quantum gases
• Machine Learning for Achieving Bose-Einstein Condensation of Thulium Atoms
• Random to chaotic temperature transition in low-field Fano-Feshbach resonances of cold thulium atoms
• Polarized cold cloud of thulium atom
• 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
• Spectroscopy of Rydberg States in Erbium using Electromagnetically Induced Transparency
• Microwave coherent spectroscopy of ultracold thulium atoms
• Losses of thulium atoms from optical dipole traps operating at 532 and 1064 nm
• Bose-Einstein condensate as a diagnostic tool for an optical lattice formed by 1064 nm laser light
• Inspiration from machine learning on example of optimization of the Bose-Einstein condensate of thulium atoms in a 1064-nm trap
• Tune-out wavelength for the thulium atom near 576 nm