Abstract
A set of coupled recurrence relations valid for a rectangular transverse intensity distribution of the light pulse has been applied in order to study the pulse sharpening performance of a Nd-YAG regenerative amplifier containing a bleachable absorber of low small-signal transmittance. It is suggested that low extracted to injected pulse duration ratios, which have recently been reported for regenerative pulse compressors operating on a self-injected Q-switch transient generated with the help of the cavity flipping technique, should be explained not solely in terms of pulse compression induced by the nonlinear absorber, but to a considerable extend also by the absorber's capability to select among the peak intensities of the short pulses hidden in the temporal sub-structure of the injected pulse.
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