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首页> 外文期刊>Journal of optics, B. Quantum and semiclassical optics: Journal of the European Optical Society >Continuous loading of cold atoms into a Ioffe-Pritchard magnetic trap
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Continuous loading of cold atoms into a Ioffe-Pritchard magnetic trap

机译:将冷原子连续加载到艾菲尔-皮尔查德磁阱中

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摘要

We present a robust continuous optical loading scheme for a Ioffe-Pritchard (IP) type magnetic trap (MT). Chromium atoms are cooled and trapped in a modified magneto-optical trap (MOT) consisting of a conventional 2D-MOT in the radial direction and an axial molasses. The MOT and IP trap share the same magnetic field configuration. Continuous loading of atoms into the IP trap is provided by radiative leakage from the MOT to a metastable level which is magnetically trapped and decoupled from the MOT light. We are able to accumulate 30 times more atoms in the MT than in the MOT. The absolute number of 2 * 10~8 atoms is limited by inelastic collisions. A model based on rate equations shows good agreement with the data. Our scheme can also be applied to other atoms with similar level structure like alkaline earth metals.
机译:我们提出了一个强大的连续光学加载方案,用于Ioffe-Pritchard(IP)型磁阱(MT)。铬原子被冷却并捕获在改进的磁光阱(MOT)中,该磁光阱由沿径向方向的常规2D-MOT和轴向糖蜜组成。 MOT和IP陷阱共享相同的磁场配置。从MOT到亚稳能级的辐射泄漏提供了原子向IP陷阱的连续负载,该辐射从MOT光被磁俘获并解耦。我们在MT中积累的原子比在MOT中积累的原子多30倍。 2 * 10〜8个原子的绝对数量受到非弹性碰撞的限制。基于速率方程的模型显示出与数据的良好一致性。我们的方案也可以应用于其他具有类似能级结构的原子,例如碱土金属。

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