Hyperpolarizability Effects in a Sr Optical Lattice Clock | Zendy

Anders Brusch | Zendy; Rodolphe Le Targat | Zendy; Xavier Baillard | Zendy; Mathilde Fouché | Zendy; P. Lemonde | Zendy

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Hyperpolarizability Effects in a Sr Optical Lattice Clock

Author(s) -

Anders Brusch,

Rodolphe Le Targat,

Xavier Baillard,

Mathilde Fouché,

P. Lemonde

Publication year - 2006

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.96.103003

Subject(s) - hyperpolarizability , trapping , wavelength , physics , optical lattice , lattice (music) , optics , atomic physics , condensed matter physics , quantum mechanics , nonlinear optical , nonlinear system , superfluidity , ecology , biology , acoustics

We report the observation of the higher order frequency shift due to the trapping field in a $^{87}$Sr 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 $10^{-18}$. 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

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