小型化光抽运铯束原子钟的Rabi牵引

Rabi pulling in miniaturized optically pumped cesium beam atomic clock

对于小型化光抽运铯束原子钟来说,最重要的指标之一是它的频率稳定度,尤其是长期频率稳定度。小型化光抽运铯束原子钟当中的各项频移机制会导致其运行过程中频率的移动,它们是恶化原子钟长期频率稳定度的源头。本文从理论上分析了小型化光抽运铯束原子钟当中的Rabi牵引,对其频移贡献的大小和对各项参数的敏感度进行计算,并提出了调整合适的C场大小,控制合适的系统参数可以减小该频移对小型化光抽运铯束原子钟频率稳定度的影响。结果表明,Rabi牵引在小型化光抽运铯束原子钟的研究当中非常重要,文中提到的方法对原子钟的频率稳定度有改善作用。

One of the most important performances of miniaturized optically pumped cesium beam atomic clocks is frequency stability,especially long-term frequency stability.Frequency shift mechanisms in miniaturized optically pumped cesium beam atomic clock can lead to deterioration of long-term frequency stability.This paper theoretically analyzes the Rabi pulling frequency shift in our miniaturized optically pumped cesium beam atomic clock,and we calculate the Rabi pulling frequency shift and the sensitivity to some parameters in the clock.Then we conclude that adjusting the parameters such as C-field can reduce the influence.The results show that Rabi pulling is important in the study of miniaturized optically pumped cesium beam atomic clocks.The methods mentioned in the paper can improve the frequency stability of atomicclock.