Generation of high-power 2nd, 3rd, 4th, and 5th harmonics of 1064 nm with a 1.5 kW polarization-maintaining, continuous-wave Yb-doped fiber laser

A 1.5kW polarization-maintaining CW fiber laser produced 860W of 532nm, 220W of 355nm, 16W of 266nm, and 0.4W of 213nm with M 2 ≤1.45 and high stability. Fiber coupling and intensity modulation of the harmonics has been demonstrated.