实用的LD抽运预激光电光调Q单纵模激光器  

Practical Laser-Diode Pumped Prelase Electro-Optic Q-Switched Single-Longitudinal-Mode Laser

作　　者：林宏奂[1] 隋展[1] 李明中[1] 唐军[1] 张申金[2] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [2]四川大学电子信息学院,四川成都610064

出　　处：《中国激光》2004年第8期915-918,共4页Chinese Journal of Lasers

摘　　要：使用设计新颖的双台阶脉冲发生器产生双台阶电脉冲 ,为低压KTP晶体泡克耳斯盒提供调Q驱动 ,将端面抛光的Nd∶YLF棒置于激光腔中 ,采用二极管激光器抽运 ,通过调节第二台阶电脉冲的幅度和持续时间 ,利用预激光和标准具效应的选模特性实现了Nd∶YLF激光器稳定、低同步晃动的单脉冲、单纵模脉冲输出。脉冲宽度 6 7ns,脉冲能量 1 15 6mJ,峰值功率 0 17MW ,单纵模几率 10 0 % ,单脉冲能量稳定度 3% ,调Q触发电脉冲和输出激光脉冲相对时间抖动 <4ns。激光器外围电路简单 ,系统可靠性高 ,结构简单紧凑 。A single longitudinal mode Nd∶YLiF 4 (Nd∶YLF) laser pumped by laser diode array, using a novel two step Q switching driver for the low voltage KTiPO 4 (KTP) Pockels cell was obtained. The amplitude and lasting time of the driver′s second step pulse is adjustable and the Nd∶YLF rod is end polished. Stable, low time jitter single longitudinal mode output was generated taking the advantages of prelase and etalon. The laser has produced pulse with width of 6 7 ns, energy of 1 156 mJ and a peak power of 0 17 MW. This laser holds the good single longitudinal mode probability of 100% and the stability of pulse energy of 3%. The time jitter between the Q switching trigger and output pulse is less than 4 ns. The laser is easy to adjust and would have practical use in many fields with its simple peripheral electronic equipment and high reliability.

关 键 词：激光技术 固体激光器 单纵模 预激光 标准具 KTP晶体 

分 类 号：TN248.1[电子电信—物理电子学]