动态斯塔克效应与禁戒跃迁谱线形状
Dynamic Stark effect and forbidden-transition spectral lineshapes
摘要：
我们报告的动态（交流）斯塔克效应的禁戒跃迁的实验和理论研究。参数化和描述非共振交流斯塔克位移的一般框架。本文建立了一个计算原子在强驻波中共振激发产生的谱线形状的模型，该模型考虑了非共振交流斯塔克位移。该模型用于分析和解释的交流斯塔克位移的测量静电场诱导\mbox{${\rm 6s^2}~ ^1{\rm S}_0~\to ~{\rm 5d6s}~ ^3{\rm D}_1\:$}过渡在408 nm的Yb原子。结果与假设转变的ac-Stark位移主要由${\rm 6s^2 \:} ^1{\rm S}_0\:$基态的ac-Stark位移所估计的一致。实验和分析的详细描述。这项工作的一个双产品是一个独立的测定（从408 nm跃迁的饱和行为）的斯塔克跃迁极化率，这是发现与我们早期的测量。这项工作是正在进行的努力的一部分，旨在精确测量Yb原子宇称违反效应。
英文摘要：
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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