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首页> 外文期刊>Physical Review, A. Atomic, molecular, and optical physics >Enhancement in the number of trapped atoms in a cesium magneto-optical trap by a near-resonant control laser
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Enhancement in the number of trapped atoms in a cesium magneto-optical trap by a near-resonant control laser

机译：通过近共振控制激光器提高铯磁光阱中被俘获原子的数量

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摘要

We demonstrate enhancement in the number of trapped cesium atoms in a magneto-optical trap (MOT) using a control laser that illuminates only a small faction of the capture region of the trap without interacting with the cold cloud of atoms. The enhancement is maximized when the laser is slightly blue detuned with respect to the cooling transition. Trap loading curves point to approximately a twofold increase in the capture rate, which as a consequence results in the increase in the steady state number of trapped atoms. Enhanced loading is confirmed by MOT loading and decay curves taken under the modulation of the control laser beam. Optical pumping of the inaccessible Zeeman states into the stretched states is suggested as a possible mechanism.
机译：我们展示了使用控制激光在磁光阱（MOT）中捕获的铯原子数量的增强，该控制激光仅照射陷阱的捕获区域的一小部分而不会与原子的冷云相互作用。当激光相对于冷却过渡略微失谐时，增强效果最大。陷阱加载曲线表明捕获速率大约增加了两倍，因此导致捕获原子的稳态数增加。通过在控制激光束的调制下获得的MOT加载和衰减曲线可以确认增强的加载。建议将无法进入的塞曼状态光学泵浦到拉伸状态是一种可能的机制。

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