Subpicosecond pulses (0.5–1.0 psec) have been generated by passive mode locking of a composite medium dye laser. Both the gain medium and saturable absorber are placed in a single free-flowing dye stream located near the center of the resonator. Peak pulse powers of several kilowatts have been obtained by acousto-optically dumping the mode-locked pulses from the optical cavity at repetition rates up to 105 pps.
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Shank et al. (1974) studied this question.