1. Strontium optical lattice clock at the National Time Service Center.
- Author
-
Ye-Bing Wang, Mo-Juan Yin, Jie Ren, Qin-Fang Xu, Ben-Quan Lu, Jian-Xin Han, Yang Guo, and Hong Chang
- Subjects
STRONTIUM ,OPTICAL lattices ,OPTOELECTRONICS ,SPIN-polarized currents ,LASER pulses - Abstract
We report the
87 Sr optical lattice clock developed at the National Time Service Center. We achieved a closed-loop operation of the optical lattice clock based on87 Sr atoms. The linewidth of the spin-polarized clock peak is 3.9 Hz with a clock laser pulse length of 300 ms, which corresponds to a Fourier-limited linewidth of 3 Hz. The fitting of the in-loop error signal data shows that the instability is approximately , affected primarily by the white noise. The fractional frequency difference averages down to for an averaging time of 3000 s. [ABSTRACT FROM AUTHOR]- Published
- 2018
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