铯原子Ramsey跃迁仿真模型与实验研究  

Simulation Model and Experimental Research on Ramsey Transition of Cesium Atoms

作　　者：闫雨菲 陈海军[1] 冯进军[1] YAN Yu-fei;CHEN Hai-jun;FENG Jin-jun(Beijing Institute of Vacuum Electronic Technology,National Key Laboratory of Microwave Electric Vacuum Devices,Beijing 100015,China)

机构地区：[1]北京真空电子技术研究所,微波电真空器件国家级重点实验室,北京100015

出　　处：《宇航计测技术》2021年第1期71-76,82,共7页Journal of Astronautic Metrology and Measurement

摘　　要：基于现有理论,建立了一种铯原子Ramsey跃迁仿真模型。该模型不仅可以对理想情况下微波腔内发生的跃迁线形进行仿真模拟,而且能够对铯束频标中比较常见的相邻σ跃迁、微波腔两互作用区相位差,以及C场不均匀对跃迁线形的影响进行模拟。实验测试与仿真模拟的对比表明:利用本模型可以高度还原铯束频标实验测得的跃迁线形,并给出具体的参数偏差,对铯束频标的频移分析与控制具有重要的指导作用。Based on the exiting theory,this paper establishes a simulation model of the Ramsey transition of cesium atoms.This model can not only simulate the transition line shape that occurs in the microwave cavity under ideal conditions,but also can simulate the effects of the common phenomena in the cesium beam frequency standard,such as adjacentσtransitions,the phase difference between the two interaction regions of the microwave cavity and the C field unevenness on the transition line shape.The comparison between experimental test and simulation shows that this model can highly restore the transition line shape measured by the cesium beam frequency standard experiment and give specific parameter deviations,which has an important guiding role in the frequency shift control of the cesium beam frequency standard.

关 键 词：铯束频标 Ramsey跃迁 微波互作用系统 频移 

分 类 号：O562[理学—原子与分子物理] TB939[理学—物理]