Dark-state cooling in the presence of gravity: Gravitational limit of laser cooling

被引:3
|
作者
Dum, R
Olshanii, M
机构
[1] Laboratoire Kastler Brossel, Ecole Normale Superieure, Paris Cedex 05, F-75231
来源
PHYSICAL REVIEW A | 1997年 / 55卷 / 02期
关键词
D O I
10.1103/PhysRevA.55.1217
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Dark-state cooling of atoms in the presence of a uniform external (gravity) field is investigated. The external field leads to a finite lifetime for the dark state and thereby to a lower limit for the temperatures obtainable. The minimum temperature in the presence of a gravity field is found to be k(B)T(grav)similar to Mg lambda/2 pi (where M is the atom mass, lambda the wavelength of the cooling laser). This limit is shown to be a universal limit for any laser-cooling scheme.
引用
收藏
页码:1217 / 1223
页数:7
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