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

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

2003-12-17

arxiv.org/abs/cond-mat/0312439v1

Appl. Phys. B 77, 773 (2003)

Physics

Condensed Matter

Soft Condensed Matter

8 pages, 5 figures

Scientific paper

10.1007/s00340-003-1333-1

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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