50-MW, 12-ps Nd:YVO4 slab amplifier for OPCPA pumping

The paper presents a four-pass Nd:YVO
₄
InnoSlab amplifier with a record high peak power of 50 MW and 12 ps pulse duration. It exhibits excellent noise performance with pulse fluctuation below 0.8% rms.Most of them are limited to repetition rates below 10 kHz. The InnoSlab concept is adopted for amplifying energetic picosecond pulses at 50-100 kHz repetition rate from a Duetto laser from Time-Bandwidth Products Inc. This concept has been proven for the amplification of low peak-power lasers without deteriorating beam quality and noise performance