LDA端泵浦短腔Cr^(4+):YAG被动调QNd:YAG激光器  

Short Cavity Passive Q-switched Nd:YAG Laser End-pumped by QCW-LDA

作　　者：温午麒[1] 傅汝廉[1] 孙建堂[1] 巴恩旭[1] 母国光[1] 

机构地区：[1]南开大学现代光学研究所

出　　处：《光电子．激光》2002年第9期900-903,共4页Journal of Optoelectronics·Laser

基　　金：国家科委研究基金资助项目 (19960 79)

摘　　要：采用峰值功率 6 0 0 W的准连续 (QCW)激光二极管阵列 (L DA)端泵浦 Nd:YAG晶体 ,其耦合装置为自制的微柱透镜阵列和透镜导管。使用 Cr4 + :YAG可饱和吸收晶体作为 Q开关 ,并选取长度较短的Nd:YAG晶体 ,从而使激光腔的长度缩短到 11mm。实验研究了在较短的腔长条件下调 Q输出多脉冲波形的时间、空间分布。采用平 -平腔结构时 ,每次泵浦脉冲获得单脉冲输出 ,脉冲宽度 <4 ns,能量 4 .5mA Q-switched Nd:YAG laser end-pumped by a QCW-600 W laser diode array (LDA) is reported. Coupling system of the laser are micro-cylindrical lens array and lens duct, which are made by us. Using Cr4+:YAG as Q-switch and selecting right length of the Nd:YAG crystal, we get short cavity length. Distribution of multi-pulse figure on time and space when the Q-switched laser has a short cavity are researched in our experiment. A single-spike output of each pumping is obtained with plane-plane cavity structure and 11 mm cavity length. The pulse width is larger than 4 ns and pulse energy is 4.5 mJ.

关 键 词：LDA 激光器 端泵浦 CR^4+:YAG晶体 被动调Q 准连续激光二极管阵列 

分 类 号：TN248.34[电子电信—物理电子学]