title: Optical lattice trapping of 199Hg and determination of the magic wavelength for the ultraviolet 1S(0)↔3P(0) clock transition.
abstract: We report on the Lamb-Dicke spectroscopy of the doubly forbidden (6s(2))(1)S(0)↔(6s6p)(3)P(0) transition in (199)Hg atoms confined to a vertical 1D optical lattice. With lattice trapping of ≲10(3) atoms and a 265.6 nm probe laser linked to the LNE-SYRTE primary frequency reference we have determined the center frequency of the transition for a range of lattice wavelengths and at two lattice trap depths. We find the Stark-free (magic) wavelength to be 362.53(0.21) nm-essential knowledge for future use of this line in a clock with anticipated 10(-18) range accuracy. We also present evidence of the laser excitation of a Wannier-Stark ladder of states in a lattice of well depth 10E(R).
authors.affiliation: LNE-SYRTE, Observatoire de Paris, France.
authors.forename: L
authors.initials: L
authors.lastname: Yi
authors.forename: S
authors.initials: S
authors.lastname: Mejri
authors.forename: J J
authors.initials: JJ
authors.lastname: McFerran
authors.forename: Y
authors.initials: Y
authors.lastname: Le Coq
authors.forename: S
authors.initials: S
authors.lastname: Bize