Two-photon Doppler cooling of alkaline-earth-metal and ytterbium atoms

被引：28
|
作者：
Magno, WC [1 ]
Cavasso, RL [1 ]
Cruz, FC [1 ]
机构：
[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Sao Paulo, Brazil
来源：
PHYSICAL REVIEW A | 2003年 / 67卷 / 04期
关键词：
D O I：
10.1103/PhysRevA.67.043407
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The possibility of laser cooling of alkaline-earth-metal atoms and ytterbium atoms using a two-photon transition is analyzed. We consider a S-1(0)-S-1(0) transition with excitation in near resonance with the P-1(1) level. This greatly increases the two-photon transition rate, allowing an effective transfer of momentum. The experimental implementation of this technique is discussed and we show that for calcium, for example, two-photon cooling can be used to achieve a Doppler limit of 123 muK. The efficiency of this cooling scheme and the main loss mechanisms are analyzed.
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