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报道了一种由波长锁定878.6 nm半导体激光器共振抽运两块不同掺杂浓度Nd:YVO4晶体串接的1064nm激光器,并与使用单块的低掺杂浓度晶体和高掺杂浓度晶体情况进行比较,实验表明利用波长锁定878.6nm半导体激光器共振抽运双晶体串接的方式,有利于降低晶体的热效应,提高光光转换效率.当抽运功率为40 W时,获得了28.2 W的1064 nm激光输出,光光转换率为70.5%,斜率效率为70.6%,相对吸收光的光光转换率76%,斜率效率为76.4%,同时该激光器在10?C—40?C的温度变化范围内具有极好的温度稳定性.
A 1064nm laser with two different Nd: YVO4 crystals with different doping concentrations is resonantly pumped by a wavelength-locked 878.6 nm semiconductor laser and compared with the use of a single low-doping concentration crystal and a high-doping concentration crystal Experiments show that using wavelength-locked 878.6nm diode laser to pump dual-crystal series resonators can reduce the thermal effect and improve the light-to-light conversion efficiency.When the pumping power is 40 W, a 28.2 W laser at 1064 nm Output, the light conversion efficiency of 70.5%, the slope efficiency of 70.6%, the relative light absorption rate of light conversion 76%, the slope efficiency of 76.4%, while the laser in the 10? C-40? C temperature range Excellent temperature stability.