Selective control of vibrational modes with sequential femtosecond-scale laser pulses
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For nonresonant femtosecond-scale laser pulses, we showed earlier that the optimum FWHM pulse duration is 0.42 T if one wishes to achieve maximum relative excitation of a specific vibrational mode with period T. Here we show that much greater enhancement of a specific mode can be achieved with a sequence of laser pulses which have both this optimized duration and optimized delays between pulses. One can thus enhance a selected set of modes that are particularly useful in identifying or characterizing a chemical system, to lift them out of the background of less informative modes. © 2011 Elsevier B.V. All rights reserved.
author list (cited authors)
Jiang, C., Zhou, X., Xie, R., Li, F., & Allen, R. E.