Abstract:Frequency-doubled with KTP,Q-switched diode-side-pumped Nd∶YAG laser is developed. The Nd∶YAG laser is pumped by 90 ×60W pulse diode arrays, generated maximun average power of 1180mW at 1064nm with 10Hz repetition rate, and the op tical-to-op tical efficiency is 11%. 600mW at 532nm is obtained by frequency-doubling, and the efficiency of frequency2doubling ismore than 50%.