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

来源：

CHINESE PHYSICS LETTERS | 2015年 / 32卷 / 09期

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

页数：4

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