Damping rates of the atomic velocity in Sisyphus cooling

Details Damping rates of the atomic velocity in Sisyphus cooling Damping rates of the atomic velocity in Sisyphus cooling

2003-09-29

arxiv.org/abs/quant-ph/0309209v1

J. Opt. Soc. Am. B 20 (2003) 925

Physics

Quantum Physics

Scientific paper

10.1364/JOSAB.20.000925

We present a theoretical and experimental study of the damping process of the atomic velocity in Sisyphus cooling. The relaxation rates of the atomic kinetic temperature are determined for a 3D lin$\perp$lin optical lattice. We find that the damping rates of the atomic temperature depend linearly on the optical pumping rate, for a given depth of the potential wells. This is at variance with the behavior of the friction coefficient as calculated from the spatial diffusion coefficients within a model of Brownian motion. The origin of this different behavior is identified by distinguishing the role of the trapped and traveling atoms.

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