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Absolute Optical Frequency Measurements with a Fractional Uncertainty at 1 x 10-15



Jason Stalnaker, Scott A. Diddams, Leo W. Hollberg, Kyoungsik Kim, Elizabeth A. Donley, Thomas P. Heavner, Steven R. Jefferts, Filippo Levi, Thomas E. Parker, James C. Bergquist, Wayne M. Itano, Marie J. Jensen, Luca Lorini, Windell Oskay, Tara M. Fortier, J Torgerson


We report the technical details specific to our recent measurements of the optical frequency of the mercury single-ion clock in terms of the SI second as realized by the NIST-F1 cesium fountain clock. In these measurements the total fractional uncertainty is ~ 1 x 10-15, limited by the statistical measurement uncertainty. In this paper, we will address the techniques employed for the optical-to-microwave comparison itself, which had an estimated fractional uncertainty of ~3 x 10-16.
Proceedings Title
Proc. 2006 Freq. Cont. Symp.


frequency comb, laser stabilization, optical clocks, optical frequency measurement, optical frequency synthesis


Stalnaker, J. , Diddams, S. , Hollberg, L. , Kim, K. , Donley, E. , Heavner, T. , Jefferts, S. , Levi, F. , Parker, T. , Bergquist, J. , Itano, W. , Jensen, M. , Lorini, L. , Oskay, W. , Fortier, T. and Torgerson, J. (2006), Absolute Optical Frequency Measurements with a Fractional Uncertainty at 1 x 10<sup>-15</sup>, Proc. 2006 Freq. Cont. Symp., [online], (Accessed July 19, 2024)


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Created June 5, 2006, Updated February 17, 2017