title: Observation of broadband time-dependent Rabi shifting in microplasmas.
abstract: Coherent broadband radiation in the form of Rabi sidebands is observed when a ps probe laser propagates through a weakly ionized, electronically excited microplasma generated in the focus of an intense pump beam. The sidebands arise from the interaction of the probe beam with pairs of excited states of a constituent neutral atom via the probe-induced Rabi oscillation. Sideband shifting of >90 meV from the probe carrier frequency results in an effective bandwidth of 200 meV. The sidebands are controlled by the intensity and temporal profile of the probe pulse; with amplitude and shift in agreement with the predictions of a time-dependent generalized Rabi cycling model.
authors.affiliation: Center for Advanced Photonics Research, Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.
authors.forename: Ryan
authors.initials: R
authors.lastname: Compton
authors.forename: Alex
authors.initials: A
authors.lastname: Filin
authors.forename: Dmitri A
authors.initials: DA
authors.lastname: Romanov
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Levis