An additive-manufactured microwave cavity for a compact cold-atom clock
An additive-manufactured microwave cavity for a compact cold-atom clock
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DOI：
10.1063/5.0151207
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发表时间：
2023-06-14
影响因子：
3.2
通讯作者：
Affolderbach, Christoph
中科院分区：
文献类型：
--
作者：
Batori, Etienne;Bregazzi, Alan;Affolderbach, Christoph
我们提出了一种用于拉姆齐型双谐振紧凑型冷原子钟的增材制造微波腔。利用光栅磁光阱可以在腔内对原子进行激光冷却，该腔提供了良好的类TE011模式，同时保持了足够的光学通道用于原子检测。该腔具有360的低Q因子，这方便地减少了未来时钟的腔牵引。尽管增材制造工艺存在潜在的孔隙率，但我们证明该腔体非常适合真空。使用冷原子的初步时钟设置允许测量塞曼光谱和拉比振荡的腔，这使我们能够推断出优秀的场均匀性和均匀性，分别在整个体积访问的冷原子。Ramsey光谱被证明，表明该腔适合于时钟应用。最后，我们讨论了未来时钟的局限性。
We present an additive-manufactured microwave cavity for a Ramsey-type, double resonance, compact cold-atom clock. Atoms can be laser cooled inside the cavity using a grating magneto-optic trap with the cavity providing an excellent TE011-like mode while maintaining sufficient optical access for atomic detection. The cavity features a low Q-factor of 360 which conveniently reduces the cavity pulling of the future clock. Despite the potential porosity of the additive-manufacturing process, we demonstrate that the cavity is well-suited for vacuum. A preliminary clock setup using cold atoms allows for measuring the Zeeman spectrum and Rabi oscillations in the cavity which enables us to infer excellent field uniformity and homogeneity, respectively, across the volume accessed by the cold atoms. Ramsey spectroscopy is demonstrated, indicating that the cavity is suitable for clock applications. Finally, we discuss the limitations of the future clock.