Nearly transform-limited femtosecond pulses have been generated between 585 and 620 nm by simultaneous narrow-band seeding at 1.053 µm of an optical parametric amplifier pumped by a tunable high-power Ti:sapphire laser system at 1 kHz and sum-frequency mixing between the resulting idler and the pump pulses in the same nonlinear crystal.
© 1995 Optical Society of America
V. Petrov and F. Noack, "Frequency upconversion of tunable femtosecond pulses by parametric amplification and sum-frequency generation in a single nonlinear crystal," Opt. Lett. 20, 2171-2173 (1995)