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.

引用

页数：4

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