Abstract
The authors present a numerical analysis of the transient stimulated Raman scattering (SRS) process, by which pulse-compression performances are exploited. To obtain the shortest pulses by SRS, an optimization rule exists. The calculations show that it changes as the higly transient regime is met (pump pulses as short as the vibrational relaxation time or less). The results are compared with a pulse shortening experiment, in which a SRS compressor produced few picosecond long pulses ((lambda) =0.64 and (lambda) =0.79 micrometers ) with a high shortening ratio (approximately equals 25-50). In addition, these were found to be the phase-conjugated replicas of the pump.
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