First Evaluation and Frequency Measurement of the Strontium Optical Lattice Clock at NIM

被引:60
|
作者
Lin Yi-Ge [1 ]
Wang Qiang [1 ,2 ]
Li Ye [1 ,2 ]
Meng Fei [1 ]
Lin Bai-Ke [1 ,2 ]
Zang Er-Jun [1 ]
Sun Zhen [1 ]
Fang Fang [1 ]
Li Tian-Chu [1 ]
Fang Zhan-Jun [1 ]
机构
[1] Natl Inst Metrol NIM, Div Time & Frequency, Beijing 100013, Peoples R China
[2] Tsinghua Univ, Dept Precis Instrument, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
ACCURACY; TIME;
D O I
10.1088/0256-307X/32/9/090601
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
An optical lattice clock based on Sr-87 is built at National Institute of Metrology (NIM) of China. The systematic frequency shifts of the clock are evaluated with a total uncertainty of 2.3x10(-16). To measure its absolute frequency with respect to NIM's cesium fountain clock NIM5, the frequency of a flywheel H-maser of NIM5 is transferred to the Sr laboratory through a 50-km-long fiber. A fiber optical frequency comb, phase-locked to the reference frequency of this H-maser, is used for the optical frequency measurement. The absolute frequency of this Sr clock is measured to be 429228004229873.7(1.4) Hz.
引用
收藏
页数:4
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