摘要
采用侧面环绕均匀排布的紧凑型抽运结构,实现了激光二极管阵列侧向抽运Nd∶YAG陶瓷激光器高效率激光输出。理论计算得到谐振腔输出镜的最佳输出耦合透射率为22.2%,并在输出耦合镜透射率为22%的条件下,用掺杂原子数分数为1%,尺寸为5mm×75mm的Nd∶YAG陶瓷棒,获得了平均功率大于230W的准连续1064nm激光输出,其光光效率和斜率效率分别高达52.4%和61%。并测得输出激光脉冲宽度为160μs,光谱线宽略小于0.8nm,光束发散角为16mrad。实验结果显示,Nd∶YAG陶瓷激光器输出功率Nd∶YAG单晶激光器相当。
With uniformly side-around arranged compact pumping structure, high conversion efficiency operating of diode-laser-array side-pumped Nd： YAG ceramic laser was demonstrated. Using a 45 mm× 75 mm sized Nd： YAG ceramic rod with 1% dopant fraction of number of atoms, the laser generated a quasi-continuous wave （QCW） output with an average power of about 230 W at 1064 nm, and the output coupler transmission was 22%, which corresponded to the calculated result of 22.2%. The optical-to-optical conversion efficiency was 52.4%, and the slope efficiency was 61%. Besides, the pulse width of the beam was detected to be 160 μs, the line width was less than 0.8 nm, and the beam divergence angle was 16 mrad, The experiment results showed that the output power Nd ：YAG ceramic laser was comparable to that of Nd： YAG single crystal laser.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2006年第3期415-418,共4页
Acta Optica Sinica
