汞离子微波钟及其研究进展  

Mercury ion microwave clock and its research progress

作　　者：颜碧波 陈义和 柳浩[1,2] 佘磊 YAN Bibo;CHEN Yihe;LIU Hao;SHE Lei(Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China;Key Laboratory of Atomic Frequency Standards,Chinese Academy of Sciences,Wuhan 430071,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院精密测量科学与技术创新研究院,湖北武汉430071 [2]中国科学院原子频标重点实验室,湖北武汉430071 [3]中国科学院大学,北京100049

出　　处：《计测技术》2023年第3期107-115,共9页Metrology & Measurement Technology

基　　金：国家重点研发计划(2022YFB3904002)。

摘　　要：汞离子微波钟是下一代星载原子钟、地面守时原子钟的有力候选者。文章介绍了本团队在汞离子微波钟的离子囚禁、缓冲气体冷却、微波综合器、汞光谱灯等关键技术取得的突破和进展,在此基础上,研制出了小型化汞离子钟整机,其频率稳定度达到了2.3×10^(-15)/10~5 s,同时开展了分区式线形阱汞离子微波钟的技术研究,实现了离子的高效梭动及系统的闭环锁定,测得频率稳定度3.45×10^(-13)/τ^(1/2)(τ=10~10 000 s),为汞离子微波钟技术的应用奠定了重要基础。Mercury ion microwave clock is an ideal candidate for the next generation spaceborne atomic clock and ground-based timekeeping atomic clock.This paper briefly introduces the operation procedure and research status of mercury ion microwave clock,especially the latest research progress made by our group in the key technologies,including the ion trapping,buffer gas cooling,microwave synthesizer and mercury discharge lamp.On this basis,a miniaturized prototype of mercury ion clock has been built using these technologies and demonstrated frequency stability of 2.3 × 10^(-15)/10^(5) s.An extended linear ion trap mercury ion clock is also under development.The ions can be trapped and shuttled back and forth efficiently in the extended ion trap.Frequency stability of 3.45 × 10^(-13)/τ~(1/2)(τ = 10~10 000 s) has been measured in preliminary close-loop operating.All these works lay an important foundation for the further application of mercury ion microwave clock technology.

关 键 词：原子钟 汞离子 离子阱 微波综合器 缓冲气体冷却 汞光谱灯 

分 类 号：TB939[一般工业技术—计量学]