Abstract
The generation of femtosecond pulses in the near-infrared with optical parametric conversionusing KTiOPO4 crystals are reported. Subpicosecond idler pulses tunable between 1.6and 3.0 μm are generated by parametric amplification with a Ti: sapphire regenerative amplifier. Idler pulses with a broad bandwidth up to 1300 cm-1 to be used as a probe in femtosecond pump-probe experiment are obtained by dispersion-free mixing and noncolinear phase matching.
