Lanzhou Space Technology Institute of Physics, No. 100 Feiyan Roud, Chengguan District, Lanzhou, Gansu Province 730000, China.
Rev Sci Instrum. 2023 Jan 1;94(1):014706. doi: 10.1063/5.0130524.
The long-term frequency stability of the rubidium atomic clock is primarily affected by temperature variations in the lamp oven and the cavity oven, which cause changes in light intensity, which are then converted into frequency variations. Therefore, we propose using light intensity variations to actively improve the cavity oven and lamp oven temperature sensitivity of the rubidium atomic clock. This is accomplished through research into the theory of the rubidium atomic frequency standard, specifically the effect of light intensity, lamp oven temperature, and cavity oven temperature on the frequency deviation. In previous work, we discovered the relationship between the light intensity and frequency deviation by combining this with our engineering expertise. Furthermore, some related experiments show that the method is feasible with the lamp oven and cavity oven temperature sensitivity of the rubidium atomic clock greatly improved, providing an effective way to improve the rubidium atomic clock's long-term frequency stability.
铷原子钟的长期频率稳定性主要受到灯腔和腔炉温度变化的影响，这些变化会导致光强变化，进而转化为频率变化。因此，我们提出利用光强变化来主动改善铷原子钟的腔炉和灯腔温度灵敏度。这是通过对铷原子频率标准理论的研究来实现的，特别是研究了光强、灯腔温度和腔炉温度对频率偏差的影响。在之前的工作中，我们通过结合工程专业知识，发现了光强与频率偏差之间的关系。此外，一些相关实验表明，该方法对于改善铷原子钟的灯腔和腔炉温度灵敏度是可行的，这为提高铷原子钟的长期频率稳定性提供了一种有效的方法。
