H. ZHANG ET AL. 41
adaptive pulse shaping based on genetic algorithm. Sec-
ond harmonic generation frequency-resolved optical gat-
ing (SHG-FROG) traces indicate that the spectral ampli-
tude and phase of the optimal pulse are strongly modu-
lated. Based on the retrieved information from SHG-FROG
traces, it was proposed that the selective excitation of
femtosecond CARS was due to laser spectrum tailored
and pulse-train forming. We believe that these experiment-
tal results should have potential applications on stimu-
lated Raman spectrum.
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