A compact all-solid-state femtosecond Ti:sapphire oscillator-amplifier
system using no grating-based pulse stretcher produces 20-fs, 1.5-mJ
pulses at a 1-kHz repetition rate. The pulses are subsequently compres
sed in a hollow-fiber chirped-mirror compressor. The system delivers b
andwidth-limited 5-fs, 0.5-mJ pulses at 780 nm in a diffraction-limite
d beam. (C) 1997 Optical Society of America.