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物理学报  2006 

Dependence of number of trapped atoms on the experimental parameters of Rb magneto-optical trap
Rb原子磁光阱中囚禁原子数目与实验参数的依赖关系

Keywords: magneto-optical trap (MOT),cold atoms
磁光阱
,冷原子

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Abstract:

Our study indicates that the number of trapped Rb atoms in a magneto-optical trap (MOT) strongly depends on the trapping laser intensity and detuning, the repumping laser intensity and the magnetic gradient. We estimate the trapped-atom numbers changing with the trapping laser intensity and detuning, using a two-level system model. The theoretical results are in qualitative agreement with the experimental results. The experimental results also show an obvious dependence of the trapped-atom numbers on repumping laser intensity and the magnetic gradient, which the simple theory cannot account for. These studies are helpful for selecting suitable experimental parameters to achieve larger numbers of cold atoms.

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