中国激光, 2004, 31 (8): 915, 网络出版: 2006-06-12
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
激光技术 固体激光器 单纵模 预激光 标准具 KTP晶体 laser technique solid-state laser single longitudinal mode prelase etalon KTP crystal
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6.7 ns,脉冲能量1.156 mJ,峰值功率0.17 MW,单纵模几率100%,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<4 ns。激光器外围电路简单,系统可靠性高,结构简单紧凑,容易调整。
Abstract
A single-longitudinal-mode Nd∶YLiF4 (Nd∶YLF) laser pumped by laser diode array, using a novel two-step Q-switching driver for the low-voltage KTiPO4 (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.
林宏奂, 隋展, 李明中, 唐军, 张申金. 实用的LD抽运预激光电光调Q单纵模激光器[J]. 中国激光, 2004, 31(8): 915. 林宏奂, 隋展, 李明中, 唐军, 张申金. Practical Laser-Diode Pumped Prelase Electro -Optic Q-Switched Single-Longitudinal-Mode Laser[J]. Chinese Journal of Lasers, 2004, 31(8): 915.