NDLI: Hyperpolarizability effects and accuracy evaluation of a 87Sr optical lattice clock

Content Provider	IEEE Xplore Digital Library
Author	Le Targat, R. Brusch, A. Baillard, X. Fouche, M. Tcherbakoff, O. Rovera, G.D. Lemonde, P.
Copyright Year	2006
Description	Author affiliation: LNE-SYRTE, Obs. de Paris (Le Targat, R.; Brusch, A.; Baillard, X.; Fouche, M.; Tcherbakoff, O.; Rovera, G.D.; Lemonde, P.)
Abstract	The authors report the observation of the hyperpolarizability frequency shift due to the trapping field in a $^{87}Sr$ optical lattice clock. The authors show that at the magic wavelength of the lattice, where the first order term cancels, this higher order shift will not constitute a limitation to the fractional accuracy of the clock down to the 10 $_{-18}$ level. This result is achieved by operating the clock at very high trapping intensity up to 400 $kW/cm^{2}$ and by a specific study of the effect of the two two-photon transitions near the magic wavelength. The authors also report an accurate frequency measurement of the clock transition. The frequency is determined to be $v_{1S0}-^{3}P_{0}$ = 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
Starting Page	149
Ending Page	155
File Size	465941
Page Count	7
File Format	PDF
ISBN	1424400740
DOI	10.1109/FREQ.2006.275368
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Lattices Clocks Frequency Erbium Atom optics Charge carrier processes Strontium Atomic beams Laser transitions Energy states
Content Type	Text
Resource Type	Article

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