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全光纤激光系统用于完全光学Rb斯爱因斯坦冷凝物到太空应用

Lin Li, Cuiyun Zhou, Wei Xiong

|October 19, 2023

概括

为中国空间站开发了一种全新的全纤维激光系统.

科学领域:

寒冷原子物理寒冷原子物理
量子光学就是一个量子光学.
基于太空的研究.

背景情况:

中国空间站的冷原子物理研究架 (CAPR) 需要先进的激光系统.
精确的激光控制对于创建波斯-爱因斯坦凝聚物 (BEC) 是必不可少的.

研究的目的:

为CAPR开发一个全纤维激光系统.
为了使在太空中完全光学准备Rubidium-87 BECs.

主要方法:

使用稀土合纤维放大,频率翻倍和稳定780nm激光器.
实现了一个全光纤控制模块,有15个通道用于冷却,捕获和探测.
在1064nm蒸发式冷却激光器中采用了一种两级Ytterbium合纤维放大器 (YDFA).
通过使用稳定的MOT和糖蜜的功率跟踪模块来确保冷却束功率的一致性.

主要成果:

成功开发了高功率,单频780nm和1064nm全纤维激光器.
实现了用于原子操纵的光学场的精确控制和分布.
证明了磁光陷 (MOT) 和糖蜜冷却的稳定运行.

结论:

一个全光纤激光系统成功实现了在CAPR上全光学Rubidium-87 BEC的创建.
该系统为太空中超冷原子操纵提供了强大的解决方案.
在具有挑战性的太空环境中为原子捕获提供了替代方案.

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