锶光晶格钟中黑体辐射频移问题的实验方案  

Experimental scheme for the Black Body Radiation shift in strontium optical lattice clocks

作　　者：卢本全[1,2] 任铁未[1,3] 

机构地区：[1]中国科学院国家授时中心,陕西西安710600 [2]中国科学院大学,北京100049 [3]黄冈师范学院数理学院,湖北黄州438000

出　　处：《黄冈师范学院学报》2014年第6期45-50,共6页Journal of Huanggang Normal University

基　　金：国家重大科研仪器设备研制专项(61127901);黄冈师范学院校级重点学科项目(zdxkwl201404)

摘　　要：在锶原子光晶格钟中,黑体辐射频移对系统的频率不确定度影响最为显著。本文从两个方面提出改善这一问题的方案:一方面利用DC Stark效应精确测量原子的静态极化率差;另一方面,将钙光钟与锶光钟的钟跃迁频率进行综合考量,构建出一个不含有黑体辐射频移的参考频率作为频率标准,锶光钟系统的相对不确定度可望控制在2.97×10-17以内。The frequency shift induced by the Black Body Radiation provides the most remarkable contribution for the systematic uncertainty of Strontium optical lattice clocks. A experimental scheme with two aspects is suggested in this paper： on the one hand, to measure accurately the difference of the static polarizabilities atomic by using the DC Stark effect; on the other hand, to investigate the clock frequencies of Ca and Sr clocks ahogether, and to compose a frequency standard without the blackbody shift as reference. The fractional uncertainty of Sr clocks will promisingly be controlled less than 2.97 × 10^-17.

关 键 词：光晶格钟 黑体辐射 频移 

分 类 号：O431[机械工程—光学工程]