Visible optical parametric generator producing nearly bandwidth-limited femtosecond light pulses at 1 -kHz repetition rate

Abstract
The second harmonic of a femtosecond Ti:sapphire regenerative amplifier system is used to pump a parametric generator–amplifier producing visible light pulses of 160-fs duration near 570 nm and infrared pulses of < 100-fs duration between 1.23 and 1.45 μm.