一种低速、连续、单色性好的冷原子束

A Low-Velocity Continuous Atomic Rb^(87) Beam on a Ground State F=1

本文提出一种利用磁光阱冷却捕获技术制备低速、连续、单色性好原子束的方法及技术。采用3维磁光阱从背景Rb蒸汽中捕获Rb87原子进行冷却、捕获形成原子云团,利用在纵向方向上结构设计的小孔将冷原子云团推出形成冷原子束,并在原子束行进方向上采用2维光学黏胶对原子束进行准直,采用态制备激光对其进行态制备,全部制备到Rb87原子的基态能级|F=1>上,从而为原子惯性技术(原子干涉仪、原子重力仪、原子加速度计)、原子频标(原子钟)提供低速、连续、单色性好的原子束。文章对于制备技术的实验系统及实验结果进行了详细的阐述。

In the paper, a preparation method and technology of Low-Velocity Continuous atomic Rbs7 beam on a ground state F = 1 is proposed. The Rbs7 atom in the vacuum is cooled and trapped by a 3D MOT, then a atomic cloud is formed. The atomic cloud is pushed out by unbalancing radiation pressure and forms atomic beam. Then, it is collimated by 2D OM. At last, it is prepared onto F = 1 ground state of RbsT. And it can be used in the research of atom inertial technology （atomic interferometry, atomic gravity meter, atomic accelerate meter） and atomic frequency standard （atomic clock）. The paper expands on the experiment system and results in the paper.