On the role of coupling in mode selective excitation using ultrafast pulse shaping in stimulated Raman spectroscopy
S. A. Malinovskaya, P. H. Bucksbaum, P. R. Berman
Abstract
The coherence of two, coupled two-level systems, representing vibrational modes in a semiclassical model, is calculated in weak and strong fields for various coupling schemes and for different relative phases between initial state amplitudes. A relative phase equal to π projects the system into a dark state. The selective excitation of one of the two, two-level systems is studied as a function of coupling strength and initial phases.
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