Optical-to-microwave frequency comparison with fractional uncertainty of 10-15
Optical-to-microwave frequency comparison with fractional uncertainty of 10-15
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DOI：
10.1007/s00340-007-2762-z
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发表时间：
2007-10
期刊：
影响因子：
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通讯作者：
J. Stalnaker;S. Diddams;T. M. Fortier;T. M. Fortier;Kyoungsik Kim;L. Hollberg;J. Bergquist;W. Itano;M. Delany;L. Lorini;W. Oskay;T. Heavner;S. Jefferts;Filippo Levi;T. E. Parker;Jon H. Shirley
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文献类型：
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作者：
J. Stalnaker;S. Diddams;T. M. Fortier;T. M. Fortier;Kyoungsik Kim;L. Hollberg;J. Bergquist;W. Itano;M. Delany;L. Lorini;W. Oskay;T. Heavner;S. Jefferts;Filippo Levi;T. E. Parker;Jon H. Shirley
我们报告的技术方面的光微波比较我们最近的测量的光频率的汞单离子频率标准的SI秒实现的NIST-F1铯喷泉钟。在六年的时间里，这些测量已经确定了汞单离子频率，其分数不确定度小于7×10-16，使其成为迄今为止测量最准确的光频率。在本文中，我们专注于在实验中使用的比较技术的细节，并讨论了与基于飞秒激光频率梳的光-微波合成相关的不确定性。我们还提出了我们的最新结果的背景下，以前的测量汞单离子频率，并最终确定汞单离子的光学频率：f（Hg+）=1 064 721 609 899 145.30（69）Hz。
We report the technical aspects of the optical-to-microwave comparison for our recent measurements of the optical frequency of the mercury single-ion frequency standard in terms of the SI second as realized by the NIST-F1 cesium fountain clock. Over the course of six years, these measurements have resulted in a determination of the mercury single-ion frequency with a fractional uncertainty of less than 7×10-16, making it the most accurately measured optical frequency to date. In this paper, we focus on the details of the comparison techniques used in the experiment and discuss the uncertainties associated with the optical-to-microwave synthesis based on a femtosecond laser frequency comb. We also present our most recent results in the context of the previous measurements of the mercury single-ion frequency and arrive at a final determination of the mercury single-ion optical frequency: f(Hg+)=1 064 721 609 899 145.30(69) Hz.