Intermittent optical frequency measurements to reduce the dead time uncertainty of frequency link
Intermittent optical frequency measurements to reduce the dead time uncertainty of frequency link
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DOI：
10.7567/jjap.54.112401
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发表时间：
2015-11-01
影响因子：
1.5
通讯作者：
Ido, Tetsuya
中科院分区：
文献类型：
--
作者：
Hachisu, Hidekazu;Ido, Tetsuya
使用与国际原子时 (TAI) 的频率链接，以 1.1 x 10(-15) 的不确定度评估 Sr-87 晶格时钟跃迁的绝对频率。通过在五天的 TAI 网格上进行均匀分布的间歇测量，可以降低用作传递振荡器的氢脉泽的频率不确定性。三组四天或五天的测量以及 8.6 x 10(-17) 时钟的系统不确定性导致 Sr-87 S-1(0)-P-3(0) 时钟转换的绝对频率为 429 228 004 229 872.85 (47) Hz。 (C) 2015 日本应用物理学会
The absolute frequency of the Sr-87 lattice clock transition was evaluated with an uncertainty of 1.1 x 10(-15) using a frequency link to the international atomic time (TAI). The frequency uncertainty of a hydrogen maser used as a transfer oscillator was reduced by homogeneously distributed intermittent measurement over a five-day grid of TAI. Three sets of four or five days measurements as well as systematic uncertainty of the clock at 8.6 x 10(-17) have resulted in an absolute frequency of Sr-87 S-1(0)-P-3(0) clock transition to be 429 228 004 229 872.85 (47) Hz. (C) 2015 The Japan Society of Applied Physics