65-W, 532-nm radiation by cw resonant external-cavity second-harmonic generation of an 18-W Nd:YAG laser in LiB_3O_5

Abstract
We report 6.5 W of TEM00 cw 532-nm radiation generated by external resonant doubling in a LiB3O5 crystal. An 18-W, cw, injection-locked single-frequency Nd:YAG laser was used to generate 532-nm second-harmonic output with a 3-dB heterodyne linewidth of 15 kHz.