Amplification of low energy chirped picosecond pulses to multi-mJ level with ytterbium disk laser heads

摘要

We demonstrate regenerative amplification of chirped pulses from sub-nJ to multi-mJ level with CW pumped Yb:YAG thin-disk laser head. Multipass amplifier with quasi-CW pumping is developed to provide further amplification to 200 mJ range and ~70 mJ is demonstrated in first experiments at reduced repetition rate.