2026-10-14T06:15:03Z https://www.scidb.cn/oai

10.57760/sciencedb.07959 2024-06-07T09:19:08Z

2024-06-07 Physics Package Based on Intracavity Laser Cooling 87Rb Atoms for Space Cold Atom Microwave Clock doi:10.57760/sciencedb.07959 en This article proposes a new physics package to enhance the frequency stability of the space cold atom clock with the advantages of a microgravity environment. Clock working processes, including atom cooling, atomic state preparation, microwave interrogation, and transition probability detection, are integrated into the cylindrical microwave cavity to achieve a high-performance and compact physics package for the space cold atom clock. We present the detailed design and ground-test results of the cold atom clock physics package in this article, which demonstrates a frequency stability of 1.2 × 10-12 τ-1/2 with a Ramsey linewidth of 12.5 Hz, and a better performance is predicted with a 1 Hz or a narrower Ramsey linewidth in microgravity environment. The miniaturized cold atom clock based on intracavity cooling has great potential for achieving space high-precision time-frequency reference in the future. Atomic clock; Microgravity; Microwave cavity; Space station; Frequency stability Siminda Deng Wei Ren Jingfeng Xiang Jianbo Zhao Lin Li Di Zhang Jinyin Wan Desheng Lv RESTRICTED dataset Science Data Bank