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arXiv · cond-mat/0312439

Bose-Einstein Condensation in a CO_2-laser Optical Dipole Trap

Giovanni Cennini·Gunnar Ritt·Carsten Geckeler·Martin Weitz
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Abstract

We report on the achieving of Bose-Einstein condensation of a dilute atomic gas based on trapping atoms in tightly confining CO_2-laser dipole potentials. Quantum degeneracy of rubidium atoms is reached by direct evaporative cooling in both crossed and single beam trapping geometries. At the heart of these all-optical condensation experiments is the ability to obtain high initial atomic densities in quasistatic dipole traps by laser cooling techniques. Finally, we demonstrate the formation of a condensate in a field insensitive m_F=0 spin projection only. This suppresses fluctuations of the chemical potential from stray magnetic fields.

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Giovanni Cennini, Gunnar Ritt, Carsten Geckeler, Martin Weitz. 2003-12-17. Bose-Einstein Condensation in a CO_2-laser Optical Dipole Trap. https://doi.org/10.1007/s00340-003-1333-1

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