利用激光二极管(LD)阵列端面抽运Nd∶YVO4板条晶体,结合稳定非稳混合腔,实现了高功率、高效率、高光束质量的1064 nm和1342 nm激光输出。板条Nd∶YVO4晶体掺杂原子数分数为0.3%,尺寸12 mm×10 mm×1 mm,a轴切割,c轴平行于12 mm方向。采用稳定正支共焦非稳腔,在抽运功率为265 W时,得到了123 W的1064 nm连续激光输出,光光转换效率和斜效率分别为46.4%和52.4%;在输出功率约为100 W时测得稳腔和非稳腔两个方向的M2因子均为1.3,输出功率不稳定性小于1%。采用稳定负支共焦非稳腔,在抽运功率为139.5 W时,得到35.4 W的1342 nm激光输出,光光转换效率为25.4%,在稳腔方向光束质量为M2=1.23;在非稳腔方向光束质量为M2=1.14。 Nd: YVO4 slab crystals were pumped by the laser diode (LD) array end face and combined with a stable unsteady mixing chamber to achieve laser output at 1064 nm and 1342 nm with high power, high efficiency and high beam quality. The lath Nd: YVO4 crystal has a doping atomic fraction of 0.3% and a size of 12 mm × 10 mm × 1 mm with a-axis cut and a c-axis parallel to the 12 mm direction. The steady positive branch confocal unstable cavity was used. When the pump power was 265 W, a continuous 1064 nm laser output of 123 W was obtained. The light conversion efficiency and slope efficiency were 46.4% and 52.4% respectively. When the output power was about The M2 factor of both stable and unstable cavities measured at 100 W was 1.3 and the output power instability was less than 1%. Using a stable negative branching confocal unstable cavity, a 1342 nm laser output of 35.4 W was obtained at a pumping power of 139.5 W with a light-to-light conversion efficiency of 25.4% and a beam quality of M2 = 1.23 in the steady cavity direction. The cavity beam quality is M2 = 1.14.