Measurement of the s-2(1/2)-d-2(5/2) clock transition in a single yb-171(+) ion

Roberts, M. and Taylor, P. and Gateva-Kostova, S.V. and Clarke, R.B.M. and Rowley, W.R.C. and Gill, P. (1999) Measurement of the s-2(1/2)-d-2(5/2) clock transition in a single yb-171(+) ion. Physical Review A, 60 (4). pp. 2867-2872. ISSN 1050-2947 (http://dx.doi.org/10.1103/PhysRevA.60.2867)

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Abstract

Spectroscopy of the 411-nm transition in 171Yb+ has been performed and the feasibility of its use as an optical frequency standard has been demonstrated. The 2S1/2(F=0, mF=0)-2D5/2(F=2, mF=0) frequency, at zero-magnetic field, has been measured to be 729 487 779 566(153) kHz. This transition is free from the first-order Zeeman shift and has a measured second-order shift of +0.38(8) Hz/(μT)2. In addition, the hyperfine structure of the 2D5/2 level has been deduced by driving the other hyperfine components of the 411-nm transition, showing it to be inverted. The 2D5/2 hyperfine splitting, measured to be -191(2) MHz, implies an A factor of -63.6(7) MHz. These data taken in conjunction with previous work yield an isotope shift of ν171-ν172=+1317.1(1.3)MHz for this transition between the 171 and 172 isotopes.

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