Improved absolute frequency measurement of the 171Yb optical lattice clock at KRISS relative to the SI second Excitation fraction
Improved absolute frequency measurement of the 171Yb optical lattice clock at KRISS relative to the SI second Excitation fraction
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DOI：
10.7567/jjap.56.050302
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发表时间：
2017-05-01
影响因子：
1.5
通讯作者：
Yu, Dai-Hyuk
中科院分区：
文献类型：
--
作者：
Kim, Huidong;Heo, Myoung-Sun;Yu, Dai-Hyuk
我们测量了Yb-171原子在一维光晶格中S-1（0）-P-3（0）跃迁相对于SI秒的绝对频率。测定的频率为518 295 836 590 863.38（57）Hz。与我们先前于二零一三年报告的值相比，不确定性减少了14倍，原因是在减少系统不确定性方面取得了重大进展。预计这一结果将有助于确定第二次代表的新建议值。(C)2017日本应用物理学会激发分数
We measured the absolute frequency of the S-1(0)-P-3(0) transition of Yb-171 atom confined in a one-dimensional optical lattice relative to the SI second. The determined frequency was 518 295 836 590 863.38(57) Hz. The uncertainty was reduced by a factor of 14 compared with our previously reported value in 2013 due to the significant improvements in decreasing the systematic uncertainties. This result is expected to contribute to the determination of a new recommended value for the secondary representations of the second. (C) 2017 The Japan Society of Applied Physics Excitation fraction