Wave-locked 914 nm laser diode in-band pumped Nd:YVO4 /LBO A-O Q switched green laser
Abstract We report a wavelength-locked 914 nm laser diode in-band pumped intra cavity efficient green laser, in our experiment, a wave-locked 914 nm laser diode was used as a pumping source, which improve pump uniformity and pump efficiency and reducing the thermal effect of the laser greatly, thus, a high beam quality 532 nm laser output is obtained. When the pump power is 18 W and the repitition rate is 130 kHz, a green laser output of 6.7 W is obtained, and the conversion efficiency is 37.2% for pumping power of 18 W, which corresponds to a conversion efficiency of 60% for absorbed pumping. Keywords: Wave-locked； Nd:YVO4； In-band pumping；frequency doubling； 532 nm OCIS Codes ：140.3460；140.3480；140.3515；140.3540；140.3580 1 Introduction Thermal effect is one of the most important factors hindering the further improvement of the performance of solid-state lasers. Severe thermal effects can lead to deterioration of the beam quality of the laser, thermal s...