Cold and dense cesium clouds in far-detuned dipole traps

D. Boiron1, A. Michaud1, J. M. Fournier2, L. Simard1,
M. Sprenger3,G. Grynberg1, and C. Salomon1
1Laboratoire Kastler Brossel and Collège de France, 24 rue Lhomond, 75231 Paris, France
2Rowland Institute for Science, 100 Edwin H. Land Boulevard, Cambridge, Massachusetts 02142
3Fakultät für Physik, Universität Konstanz, D-78457 Konstanz, Germany

Received: 4 November 1997

Appeared in: Phys. Rev. A, 57, R4106–R4109 (1998) [online]

Abstract—We study the behavior of cesium atoms confined in far-detuned laser traps and submitted to blue Sisyphus cooling. First, in a single focused yttrium aluminum garnet (YAG) beam, the atomic cloud has a rod shape with a 6-μm transverse waist radius, a temperature of 2 μK, and a transient density of 1012 atoms/cm3. For this sample, we have not detected any influence of photon multiple scattering on the atomic temperature, in contrast to previous measurements in isotropic samples. Second, the YAG laser is used to produce a 29-μm period hexagonal optical lattice in which we directly observe the localization of the atoms by absorption imaging. Equilibrium densities on the order of 1013 atoms/cm3 are achieved in this structure.

Text (pdf): DOI: 10.1103/PhysRevA.57.R4106

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