Fiber-laser-based clockwork for long-term measurements and comparisons of visible optical frequency standards
Frequency and Time Group, Institute for National Measurement Standards, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
2 Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada
Corresponding author: email@example.com
Revised: 9 December 2009
Published online: 2 March 2010
A long-term clockwork capable of linking visible optical frequency standards to the radio frequency domain is demonstrated with a continuous measurement stretching eight days. The clockwork is based on a femtosecond fiber laser frequency comb. Using this system, an uncorrected measurement of the 88Sr+ frequency standard at 445 THz (674 nm) is completed and is in excellent agreement with previous measurements.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2010