激光二极管阵列端面抽运混合腔Nd:YVO_4板条1064nm和1342nm激光特性研究  

Laser Diode Stack End-Pumped Nd:YVO_4 Slab Laser with Hybrid Resonator at 1064 nm and 1342 nm

作　　者：张恒利[1] 闫莹[1] 刘洋[1] 李静[1] 辛建国[1] 

机构地区：[1]北京理工大学光电学院,北京100081

出　　处：《中国激光》2010年第11期2766-2768,共3页Chinese Journal of Lasers

摘　　要：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。Laser diode stack end-pumped Nd∶YVO4 slab lasers with hybrid resonator operating at both 1064 nm and 1342 nm are demonstrated.The size of the atomic fraction of 0.3% doped Nd∶YVO4 slab crystal is 12 mm×10 mm×1 mm,which is cut along a axis and the c axis is parallel with the 12 mm direction.By using a stable-positive confocal unstable resonator,123 W at 1064 nm and 35.4 W at 1342 nm laser output are realized with M2 factor of 1.3 and the optical conversion efficiency of 46.6%,and its stability is better than 1%.With a stable-negative confocal unstable cavity,35.4 W 1342 nm laser is obtained under the pump power of 139.5 W,with M2 factor less than 1.3 and the optical conversion efficiency of 25.4%.

关 键 词：激光器 激光二极管抽运 ND∶YVO4晶体 板条激光器 混合腔 

分 类 号：TN248.1[电子电信—物理电子学]