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Dynamic Stark effect and forbidden-transition spectral lineshapes

J. E. Stalnaker·D. Budker·S. J. Freedman·J. S. Guzman·S. M. Rochester·V. V. Yashchuk
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Abstract

We report on an experimental and theoretical study of the dynamic (ac) Stark effect on a forbidden transition. A general framework for parameterizing and describing off-resonant ac-Stark shifts is presented. A model is developed to calculate spectral line shapes resulting from resonant excitation of atoms in an intense standing light-wave in the presence of off-resonant ac-Stark shifts. The model is used in the analysis and interpretation of a measurement of the ac-Stark shifts of the static-electric-field-induced \mbox{${\rm 6s^2}~ ^1{\rm S}_0~\to ~{\rm 5d6s}~ ^3{\rm D}_1\:$} transition at 408 nm in atomic Yb. The results are in agreement with estimates of the ac-Stark shift of the transition under the assumption that the shift is dominated by that of the ${\rm 6s^2 \:} ^1{\rm S}_0\:$ ground state. A detailed description of the experiment and analysis is presented. A bi-product of this work is an independent determination (from the saturation behavior of the 408-nm transition) of the Stark transition polarizability, which is found to be in agreement with our earlier measurement. This work is part of the ongoing effort aimed at a precision measurement of atomic parity-violation effects in Yb.

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J. E. Stalnaker, D. Budker, S. J. Freedman, J. S. Guzman, S. M. Rochester, V. V. Yashchuk. 2005-12-16. Dynamic Stark effect and forbidden-transition spectral lineshapes. https://doi.org/10.1103/physreva.73.043416

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