Parametric amplification and self-compression of ultrashort tunablepulses

摘要

Using a 40-fs Ti:sapphire pump laser, we produced 20-fs infrarednpulses in a Β-barium borate (BaB2O4) opticalnparametric amplifier without any external dispersion compensation. Thesenresults are in good agreement with a novel semi-analytical computernsimulation. We also demonstrate that cascading of second-order nonlinearneffects yields simultaneous production of ultrashort visible pulses fromna near-infrared (NIR) pump