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

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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.
8 pages, 5 figures

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Soft Condensed Matter, Atomic Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/22945

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0312439
 http://arxiv.org/abs/cond-mat/0312439
 Appl. Phys. B 77, 773 (2003)
 doi:10.1007/s00340-003-1333-1

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arXiv