Abstract

We report the amplification of a colliding-pulse mode-locking femtosecond laser to energies of 2 μJ per pulse at a repetition rate of 3 kHz in a two-stage double-confocal resonator dye amplifier pumped by a Q-switched diode-frequency-doubled Nd:YLF laser. The amplified pulses were used to generate a continuum in both an pumped glycol jet and a single-mode fiber. The spectrally broadened pulses from the fiber were compressed to ethylene a duration of 13 fs.

© 1991 Optical Society of America

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