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Symposium on Frequency Standards and Metrology

THE Yb OPTICAL LATTICE CLOCK

N. Lemke, Andrew D. Ludlow, Zeb W. Barber, N. Poli, Chad Hoyt, L. S., J. E. Stalnaker, Chris W. Oates, Leo W. Hollberg, Jonas Bergquist, Anders Brusch, Tara M. Fortier, Scott A. Diddams, Thomas P. Heavner, Steven R. Jefferts, T.E. Parker

Published May 1, 2009• 0 citations
Publisher

Abstract

We describe the development and latest results of an optical lattice clock based on neutral Yb atoms, including investigations based on both even and odd isotopes. We report a fractional frequency uncertainty below 10-15 for 171Yb.
DOI
10.1142/9789812838223_0021

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We experimentally investigate an optical clock based on 171^{171}171Yb (I=1/2I=1/2I=1/2) atoms confined in an optical lattice. We have evaluated all known frequency shifts to the clock transition, including a density-dependent collision shift, with a fractional uncertainty of 3.4×10−163.4 \times 10^{-16}3.4×10−16, limited principally by uncertainty in the blackbody radiation Stark shift. We measured the absolute clock transition frequency relative to the NIST-F1 Cs fountain clock and find the frequency to be 518 295 836 590 865.2(0.7) Hz.
We experimentally investigate an optical clock based on 171^{171}171Yb (I=1/2I=1/2I=1/2) atoms confined in an optical lattice. We have evaluated all known frequency shifts to the clock transition, including a density-dependent collision shift, with a fractional uncertainty of 3.4×10−163.4 \times 10^{-16}3.4×10−16, limited principally by uncertainty in the blackbody radiation Stark shift. We measured the absolute clock transition frequency relative to the NIST-F1 Cs fountain clock and find the frequency to be 518 295 836 590 865.2(0.7) Hz.