Title :
Accuracy Evaluation of a 87Sr Optical Lattice Clock
Author :
Fouché, Mathilde ; Le Targat, Rodolphe ; Baillard, Xavier ; Brusch, Anders ; Tcherbakoff, Olivier ; Rovera, Giovanni D. ; Lemonde, Pierre
Author_Institution :
LNE-SYRTE, Obs. de Paris
fDate :
4/1/2007 12:00:00 AM
Abstract :
In this paper, we report the observation of the higher order frequency shift due to the trapping field in a 87Sr optical lattice clock. We show that at the magic wavelength of the lattice, where the first order term cancels, the higher order shift will not constitute a limitation to the fractional accuracy of the clock at a level of 10-18. We also report an accurate frequency measurement of the clock transition. The frequency is determined to be v 1S0-3P0 = 429 228 004 229 879 (5) Hz with a fractional uncertainty that is comparable to state-of-the-art optical clocks with neutral atoms in free fall
Keywords :
clocks; frequency measurement; frequency standards; optical lattices; strontium; 87Sr optical lattice clock; Sr; accuracy evaluation; hyperpolarizability; optical frequency measurement; optical frequency standard; Atom optics; Atomic measurements; Charge carrier processes; Clocks; Frequency; Laser transitions; Lattices; Optical pumping; Optical sensors; Strontium; Hyperpolarizability; optical frequency standard; optical lattice clock; strontium;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2007.891137
