Precise calibration of zero-crossing temperature and drift of an ultralow expansion cavity with a clock transition spectrum  

作　　者：Hui Liu Kun-Liang Jiang Jin-Qi Wang Zhuan-Xian Xiong Ling-Xiang He Bao-Long Lu 刘慧;姜坤良;王进起;熊转贤;贺凌翔;吕宝龙(State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071,China;Key Laboratory of Atomic Frequency Standards,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071,China [2]Key Laboratory of Atomic Frequency Standards,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Physics B》2018年第5期150-154,共5页中国物理B(英文版)

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.61227805,11574352,91536104,and 91636215);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB21030100)

摘　　要：We report a clock transition spectrum approach,which is used to calibrate the zero-crossing temperature and frequency drift of an ultralow expansion(ULE)cavity with a Hertz level resolution.With this approach,the linear and nonlinear drifts of the ULE cavity along a variety of controlled temperatures are clearly presented.When the controlled temperature of ULE cavity is tuned away from the zero-crossing temperature of the ULE cavity,the cavity shows larger and larger nonlinear drift.According to our theoretical analysis and experimental results,we investigate more details of the drift property of the ULE cavity around the zero-crossing temperature,which has seldom been explored before.We can definitely conclude that the zero-crossing temperature of our ULE cavity used in an ytterbium(Yb)lattice clock is around 31.7℃.

关 键 词：clock transition spectra ULE cavity frequency drift zero-crossing temperature 

分 类 号：O562[理学—原子与分子物理]