Synchronously pumped subpicosecond dye oscillator-amplifier system

A tunable subpicosecond dye oscillator-amplifier system that produces 0.20-mJ, 190-fsec pulses at 620 nm in a nearly diffraction-limited beam is demonstrated. The output pulse is temporally broadened by 10% relative to the input pulse. The system consists of a synchronously pumped subpicosecond dye laser followed by a dye amplifier that is quasi-longitudinally pumped using the frequency-doubled output from a Nd:YAG regenerative amplifier.