脉宽可调YAG激光器稳定性的实验研究  

Experimental Investigation on the Stability of YAG Laser with Tunable pulsewidth

作　　者：刘莉[1] 吕志伟[1] 何伟明[1] 王骐[1] 马祖光[1] 

机构地区：[1]哈尔滨工业大学光电子技术研究所,哈尔滨150001

出　　处：《中国激光》2000年第2期105-109,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金;国家高技术惯性约束聚变主题资助项目

摘　　要：对脉冲Nd:YAG激光器抽运的双池受激布里渊散射(SBS)相位共轭镜进行了实验研究,将相位共轭镜后向反射光束馈入YAG放大级,经放大级放大,由偏振片耦合输出的激光束具有高质量、脉宽可调的特点,远场发散角接近1倍衍射极限。同时研究了远场发散角和输出能量稳定性随抽运能量及双池间距的变化关系,通过选用最佳抽运能量,远场发散角及激光器总体输出能量的波动性都可以控制在5%以内。A two cell SBS phase conjugating mirror pumped by pulsed Nd∶YAG laser was experimentally investigated. After returned to YAG amplifer and coupled out by a polariser, SBS output beam had the characteristics of duration tunability and good quality with near diffraction limited far field divergence angle. The stability on SBS ouput energy and far field divergence angle with the change of pump energy and separation between SBS generator and amplifier cells was also studied. By choosing pump energy, the fluctuation on SBS output energy and far field divergence angle could be controlled within 5%.

关 键 词：受激布里渊散射 脉宽地 YAG激光器 稳定性 

分 类 号：TN248.1[电子电信—物理电子学]