All-optical formation of an atomic Bose-Einstein condensate
We have created a Bose-Einstein condensate (BEC) of 87Rb atoms directly in an optical trap. We employ a quasielectrostatic dipole force trap formed by two crossed CO2 laser beams. Loading directly from a sub-Doppler laser-cooled cloud of atoms results in initial phase space densities of approximatel...
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| Veröffentlicht in: | Physical review letters 2001-07, Vol.87 (1), p.010404-010404, Article 010404 |
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| container_title | Physical review letters |
| container_volume | 87 |
| creator | Barrett, M D Sauer, J A Chapman, M S |
| description | We have created a Bose-Einstein condensate (BEC) of 87Rb atoms directly in an optical trap. We employ a quasielectrostatic dipole force trap formed by two crossed CO2 laser beams. Loading directly from a sub-Doppler laser-cooled cloud of atoms results in initial phase space densities of approximately 1/200. Evaporatively cooling through the BEC transition is achieved by lowering the power in the trapping beams over approximately 2 s. The resulting condensates are F = 1 spinors with 3.5x10(4) atoms distributed between the m(F) = (-1,0,1) states. |
| doi_str_mv | 10.1103/physrevlett.87.010404 |
| format | Article |
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| ispartof | Physical review letters, 2001-07, Vol.87 (1), p.010404-010404, Article 010404 |
| issn | 0031-9007 1079-7114 |
| language | eng |
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| source | American Physical Society Journals |
| subjects | ATOMS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CLOUDS CONDENSATES DIPOLES LASERS PHASE SPACE SPINORS TRAPPING |
| title | All-optical formation of an atomic Bose-Einstein condensate |
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