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2018 Volume 27 Issue 2
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Ye-Bing Wang, Mo-Juan Yin, Jie Ren, Qin-Fang Xu, Ben-Quan Lu, Jian-Xin Han, Yang Guo, Hong Chang. 2018: Strontium optical lattice clock at the National Time Service Center, Chinese Physics B, 27(2): 204-209. doi: 10.1088/1674-1056/27/2/023701
Citation: Ye-Bing Wang, Mo-Juan Yin, Jie Ren, Qin-Fang Xu, Ben-Quan Lu, Jian-Xin Han, Yang Guo, Hong Chang. 2018: Strontium optical lattice clock at the National Time Service Center, Chinese Physics B, 27(2): 204-209. doi: 10.1088/1674-1056/27/2/023701
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Strontium optical lattice clock at the National Time Service Center

  • CAS Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Xi'an 710600, China;University of Chinese Academy of Sciences(CAS), Beijing 100049, China

  • CAS Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Xi'an 710600, China

  • Available Online: 01/01/2018
  • Fund Project: the National Natural Science Foundation of China(Grant .11474282 and 61775220)%the Key Research Project of Frontier Science of the Chinese Academy of Sciences(Grant QYZDB-SSW-JSC004)%the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant XDB21030700)
  • We report the 87Sr optical lattice clock developed at the National Time Service Center.We achieved a closed-loop operation of the optical lattice clock based on 87Sr 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 5 × 10-15τ-1/2,affected primarily by the white noise.The fractional frequency difference averages down to 5.7 × 10-17 for an averaging time of 3000 s.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Strontium optical lattice clock at the National Time Service Center

  • Available Online: 01/01/2018

Abstract: We report the 87Sr optical lattice clock developed at the National Time Service Center.We achieved a closed-loop operation of the optical lattice clock based on 87Sr 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 5 × 10-15τ-1/2,affected primarily by the white noise.The fractional frequency difference averages down to 5.7 × 10-17 for an averaging time of 3000 s.

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