Abstract
Alignment of vibronically excited benzene (C6 D6) along a lab-fixed axis in a selected rotational J, K, and m state is obtained by a UV–UV optical double-resonance experiment without additional, static electric or magnetic fields. The dynamic Stark effect caused by a narrow band, coherent laser pulse leads to an energetic separation of the individual m levels and renders the selective excitation of ‖m′‖=J′ levels by a weaker probing laser pulse.
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