高功率LDA紧密侧面抽运Nd:YLF两级双程离轴放大系统实验研究  

Experimental study on Nd:YLF two-stage double-pass off-axis amplifying system tightly-side-pumped by high power LD array

作　　者：张申金[1] 冯国英[1] 李明中[2] 丁磊[2] 隋展[2] 林宏奂[2] 王衍勇[3] 欧群飞[1] 唐军[2] 罗亦鸣[2] 

机构地区：[1]四川大学电子信息学院,四川成都610064 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [3]天津大学精密仪器与光电子工程学院,天津300072

出　　处：《强激光与粒子束》2004年第9期1148-1152,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金委 中国工程物理研究院联合基金资助课题(10176019)

摘　　要：　介绍了一台10mm口径两级双程离轴放大系统,实现了对5mm×5mm口径光束的激光放大,耦合系统采用高功率LDA紧密侧面直接抽运棒状Nd:YLF方式。分析并实验研究了在不同抽运电流、放大脉冲与放大器LDA抽运时刻的不同延时及不同注入能量条件下,放大系统及光束每次放大时放大特性的规律。实验得到:在放大系统5mm×5mm软光阑处注入1.58mJ能量时,放大系统可输出129.2mJ能量,能量提取效率达到19.5%,满足该系统的设计指标。A 10mm caliber two-stage double-pass off-axis amplifying system was described, and the 5mm×5mm caliber laser pulse was amplified. The coupling system of high power LD array tight-side directly-pumping Nd:YLF rod was used. The characters of amplifying system and each amplification in different pump currents and input energy were analyzed by theory and experiment. In experiment when 1.58mJ energy was injected into the soft 5mm×5mm diaphragm, 129.2mJ energy was output, and energy extract efficiency was 19.5%.

关 键 词：LDA紧密侧面抽运 Nd:YLF激光放大器 两级双程离轴放大 放大特性 

分 类 号：TN248.13[电子电信—物理电子学]