THE fourth harmonic of a Q-spoiled high-intensity neodymium-in-glass laser was produced using the nonlinear optic effect in two KDP (potassium dihydrogen phosphate) crystals. The laser output pulse at 1.06µ has been converted successively to 5300 ⠫ and 2650 ⠫. The purpose of the communication is to report these experimental results and to point out the potential importance of this high-intensity spatially coherent radiation at 2650 ⠫.