He Xuan, Fang Shengwei, Yuan Zhichao, Xie Weibin, Chen Nan, Xiong Zezheng, Wang Qing, Qi Xianghui, Chen Xuzong
Appl Opt. 2021 Dec 1;60(34):10761-10765. doi: 10.1364/AO.443812.
Compared to other commercial atomic clocks in the time keeping field, the greatest advantage of cesium beam atomic clocks is their superior long-term stability. Compared to magnetic state-selection clocks, optically pumped cesium beam atomic clocks have more interacting atoms, which results in better stability potential. To achieve good long-term stability, we propose methods including stabilization of laser power and reconstruction of circuits. They play a key role in the long-term stability of cesium beam atomic clocks. After 75 days of continuous running and measurement, we released the 5-day stability results (7×10 Allan deviation) of our optically pumped cesium beam atomic clock. To the best of our knowledge, this is the best 5-day stability result ever reported for compact optically pumped cesium beam atomic clocks.
与计时领域的其他商用原子钟相比，铯束原子钟最大的优势在于其卓越的长期稳定性。与磁选态时钟相比，光泵铯束原子钟有更多相互作用的原子，这使得其具备更好的稳定潜力。为实现良好的长期稳定性，我们提出了包括激光功率稳定和电路重构在内的方法。它们在铯束原子钟的长期稳定性方面起着关键作用。经过75天的连续运行和测量，我们公布了光泵铯束原子钟的5天稳定性结果（7×10阿伦偏差）。据我们所知，这是紧凑型光泵铯束原子钟迄今所报道的最佳5天稳定性结果。
