All-optical formation of an atomic Bose-Einstein condensate

被引：486
|
作者：
Barrett, MD [1 ]
Sauer, JA [1 ]
Chapman, MS [1 ]
机构：
[1] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 01期
关键词：
D O I：
10.1103/PhysRevLett.87.010404
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have created a Bose-Einstein condensate (BEC) of Rb-87 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 similar to1/200. Evaporatively cooling through the BEC transition is achieved by lowering the power in the trapping beams over similar to2 s. The resulting condensates are F = 1 spinors with 3.5 x 10(4) atoms distributed between the m(F) = (-1,0, 1) states.
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页数：4
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