国家报时中心锶光学点阵钟的研制

2018 European Frequency and Time Forum (EFTF) Pub Date : 2018-04-01 DOI:10.1109/EFTF.2018.8409072

Mojuan Yin, Qinfang Xu, Yebing Wang, Jie Ren, Yang Guo, Hong Chang

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引用次数: 0

摘要

在中国国家报时中心实现了87Sr光点阵钟的闭环操作。自旋极化时钟跃迁谱线宽为3.9 Hz，查询时间为300 ms。由环内误差信号数据的拟合函数测得不稳定性约为5×10−15/ τ 1/2，主要受白噪声的影响。分数阶频率差的平均值降至6×10−17，平均时间为3000s。

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Development of the strontium optical lattice clock at national time service center

A closed-loop operation optical lattice clock of ⁸⁷Sr has been realized built in National Time Service Center of China. The linewidth of spin-polarized clock transition spectrum is 3.9 Hz with a interrogating time of 300 ms. The instability is measured to be about 5×10⁻¹⁵/ τ ^1/2 from the fit function of the in-loop error signal data, which affected mainly by the white noise. The fractional frequency difference averages down to 6×10⁻¹⁷ at an average time of 3000 s.

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2018 European Frequency and Time Forum (EFTF)

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