Fluorescence polarization imaging of Sisyphus cooling in an atomic beam

Sparkes, B. M.; Weber, Konradin; Hawthorn, C. J.; Walkiewicz, M. R.; Vredenbregt, E.J.D.; Scholten, R. E.

doi:10.1103/physreva.92.023411

Cited by 1 publication

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“…Such examples are Li and K (see, e.g., [9,[18][19][20][21][22]), which are alkalis as well, but that have hyperfine structure splittings that complicate the cooling process. Increased knowledge of the laser cooling process may also be required when atoms are cooled in a setting, or geometry, that significantly changes the conditions, or in the cooling of other types of systems (see, e.g., [23][24][25][26][27][28]). With these new challenges to laser cooling, the motivation for deepening the understanding of the cooling process increases, as does the need for honing theoretical and numerical tools for its analysis.…”

Section: A the Interest Of Laser Coolingmentioning

confidence: 99%

Bimodal momentum distribution of laser-cooled atoms in optical lattices

et al. 2016

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We study, numerically and experimentally, the momentum distribution of atoms cooled in optical lattices. Using semi-classical simulations, we show that this distribution is bimodal, made up of a central feature corresponding to "cold", trapped atoms, with tails of "hot", untrapped atoms, and that this holds true also for very shallow potentials. Careful analysis of the distribution of high-momentum untrapped atoms, both from simulations and experiments, shows that the tails of the distribution does not follow a normal law, hinting at a power-law distribution and non-ergodic behavior. We also revisit the phenomenon of d\'ecrochage, the potential depth below which the temperature of the atoms starts increasing

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