Abstract.
The cycle-averaged ac Stark effect associated with the [ A ]2Σ+v′=2?[ X ]2Π1/2v′=0 two-photon absorption of NO at intensities between 7.7 and 15.2 TW cm-2 has been characterized in real time through a synergic combination of bichromatic laser experiments and quantum-dynamics calculations. Measurements of the fluorescence emitted by the Rydberg [ A ]2Σ+v′=2 level as a function of time between Stark and probe components of a bichromatic field exhibit a characteristic evolution in temporal peak structure with Stark-field intensity, which is interpreted in terms of a time-dependent Floquet analysis of the laser–matter interaction. The experimental observations are consistent with a dynamic Stark shift of Δεs(ω1,ω2)≤0.23 eV of the optical transition at these intensities.
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Received: 18 January 2002 / Revised version: 6 March 2002 / Published online: 24 April 2002
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López-Martens, R., Schmidt, T. & Roberts, G. Time-resolved Stark effect in rapidly varying fields. Appl Phys B 74, 577–581 (2002). https://doi.org/10.1007/s003400200839
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DOI: https://doi.org/10.1007/s003400200839