10-mJ pulse energy and 200 W average power Yb-doped fiber laser

We have developed an all-fiber format 10-mJ energy and 200 W average power Yb-doped laser. Based on a seed that utilizes first relaxation peaks and 65-um multimode fiber amplifier, the laser produces 300 ns pulses at 1-50 kHz variable repetition frequencies. Wall plug efficiency of 25% and 10 m delivery output with isolated head are essential features for industrial applications.