Optical Parametric Amplifier of Chirped Pulses Pumped by Two and Three Beams

摘要

We present a two and three-beam pumped optical parametric amplifier seeded by chirped pulses from broadband Ti:sapphire oscillator. The seed source was optically synchronized with Nd:YAG pump laser. The signal was amplified in type I BBO crystal pumped by several intersecting beams and the energy of amplified signal ranged from 0.23 mJ to 0.72 mJ depending on a number of pump beams used as well as pumping configuration employed. The interplay of interacting waves was also observed and explained theoretically.