期刊
PHYSICAL REVIEW A
卷 79, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.061406
关键词
atom-photon collisions; Bose-Einstein condensation; evaporation; radiation pressure; rubidium
资金
- CNRS
- CNES
- ICE project
- European Union
- MAP program SAI of the European Space Agency (ESA)
We demonstrate runaway evaporative cooling directly with a tightly confining optical-dipole trap and achieve fast production of condensates of 1.5x10(5) Rb-87 atoms. Our scheme uses a misaligned crossed-beam far off-resonance optical-dipole trap (MACRO-FORT). It is characterized by independent control of the trap confinement and depth allowing forced all-optical evaporation in the runaway regime. Although our configuration is particularly well suited to the case of Rb-87 atoms in a 1565 nm optical trap, where an efficient initial loading is possible, our scheme is general and will allow all-optical evaporative cooling at constant stiffness for every optically trappable atomic or even molecular species.
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