Transverse laser cooling of a thermal atomic beam of dysprosium

Details Transverse laser cooling of a thermal atomic beam of dysprosium Transverse laser cooling of a thermal atomic beam of dysprosium

2009-12-11

arxiv.org/abs/0912.2133v2

Physics

Atomic Physics

5 pages, 4 figures v2: 7 pages, 7 figures

Scientific paper

A thermal atomic beam of dysprosium (Dy) atoms is cooled using the $4f^{10}6s^2 (J=8) \to 4f^{10}6s6p (J=9)$ transition at 421 nm. The cooling is done via a standing light wave orthogonal to the atomic beam. Efficient transverse cooling to the Doppler limit is demonstrated for all observable isotopes of dysprosium. Branching ratios to metastable states are demonstrated to be $<5\times10^{-4}$. A scheme for enhancement of the nonzero-nuclear-spin-isotope cooling, as well as a method for direct identification of possible trap states, is proposed.

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