强激光与粒子束, 2004, 16 (9): 1148, 网络出版: 2006-05-15  

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

Experiment study on Nd:YLF two-stage double-pass off-axis amplifying system tightly-side-pumped by high power LD array
作者单位
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
摘要
介绍了一台φ10mm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.
Abstract
A φ10mm 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%.

张申金, 冯国英, 李明中, 丁磊, 隋展, 林宏奂, 王衍勇, 欧群飞, 唐军, 罗亦鸣. 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[J]. 强激光与粒子束, 2004, 16(9): 1148. ZHANG Shen-jin, FENG Guo-ying, LI Ming-zhong, DING Lei, SUI Zhan, LIN Hong-huan, WANG Yan-yong, OU Qun-fei, TANG Jun, LUO Yi-ming. Experiment study on Nd:YLF two-stage double-pass off-axis amplifying system tightly-side-pumped by high power LD array[J]. High Power Laser and Particle Beams, 2004, 16(9): 1148.

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