1064nm / 532nm / 660nm Three-Wavelength Laser Generation from LD Side-Pumped Nd:YAG Crystal

1064 nm / 532 nm / 660 nm three wavelength lasers were obtained simultaneously or singly from a novel LD side-pumped Nd: YAG laser system with acousto-optic Q-switched and nonlinear frequency conversion technologies. When the three wavelength lasers output singly and the Pumping power was 103 W, 1064 nm laser was 14.5 W and the green and red laser reached 4.7 W and 1.6 W respectively at the repetition rate of 10.5 kHz and 11.5 kHz. When they operated simultaneously, the red, green and infrared lasers were obtained with the output power distribution of LOW at 660 nm, 4.3 W at 532 nm and 10.1 W at 1064 nm and the instability was less than 2 % within 3 hours.