@inproceedings{98ab1296b7c14506a2ce2ab2bcee2156,
title = "Absolute optical frequency measurements with a fractional frequency uncertainty at 1 × 10-15",
abstract = "We report the technical details specific to 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. In these measurements the total fractional uncertainty is ≈ 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 × 10-16, limited by the stability of the electronics used for the comparison.",
author = "Stalnaker, {J. E.} and Diddams, {S. A.} and K. Kim and L. Hollberg and Donley, {E. A.} and Heavner, {T. P.} and Jefferts, {S. R.} and F. Levi and Parker, {T. E.} and Bergquist, {J. C.} and Itano, {W. M.} and Jensen, {M. J.} and L. Lorini and Oskay, {W. H.} and Fortier, {T. M.}",
year = "2006",
month = jan,
day = "1",
doi = "10.1109/FREQ.2006.275430",
language = "English",
isbn = "1424400740",
series = "Proceedings of the IEEE International Frequency Control Symposium and Exposition",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "462--469",
booktitle = "2006 IEEE International Frequency Control Symposium and Exposition",
address = "United States",
note = "2006 IEEE International Frequency Control Symposium and Exposition ; Conference date: 04-06-2006 Through 07-06-2006",
}