镱原子光频标中泵浦光特性的研究  

The research of the characteristics of pump light in ytterbium atomic optical frequency standard

作　　者：许朋 XU Peng(North Anhui Health Vocational College,Suzhou 234000,China)

机构地区：[1]皖北卫生职业学院,宿州234000

出　　处：《时间频率学报》2021年第2期85-91,共7页Journal of Time and Frequency

摘　　要：镱原子光频标中泵浦光参数的优化可以提高钟频率稳定度性能。通过分析镱原子能级分布的特点,建立了能级跃迁速率方程。采用数值计算方法求解速率方程,获得了泵浦时间与649 nm、770 nm、1388 nm泵浦光的光强和失谐的关系。比较了两种泵浦方法的效果,分析了泵浦时间的改变对钟频率稳定度性能的影响。理论计算的结果为实验确定泵浦光的光强、泵浦时间提供了重要的参考。The optimization of the pump light parameters in the ytterbium atomic optical frequency standard can improve the clock frequency stability performance.By analyzing the characteristics of the energy level distribution of ytterbium atom,the energy level transition rate equation was established.The numerical calculation method was used to solve the rate equation,and the relationship between the pumping time and the intensity and detuning of the pump light at 649 nm,770nm and 1388 nm was obtained.The effects of the two pumping methods were compared,and the effect of changes in pumping time on the performance of clock frequency stability was analyzed.The results from our theoretical calculation provide an important reference for the experiment to determine the pump light intensity and pumping time.

关 键 词：镱原子光频标 速率方程 泵浦光 

分 类 号：O562[理学—原子与分子物理]