百瓦级高光束质量Nd:YAG板条激光放大器  

Hundreds Watts Nd:YAG Slab Laser Amplifier with High Beam Quality

作　　者：汪丹[1,2] 周唐建[1,2] 王君涛[1,2] 童立新[1,2] 胡浩[1,2] 李密[1,2] 

机构地区：[1]高能激光科学与技术重点实验室,四川绵阳621900 [2]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《中国激光》2013年第10期1-5,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金重大项目(60890201)

摘　　要：研究了一台端面抽运的Nd:YAG板条激光放大器,采用低掺杂、键合的Nd:YAG板条晶体和3通放大结构,实现功率330W,光束质量M2x=1.23,M2y=1.73的激光输出。采用4f像传递系统,有效减小了板条入口的切光损耗,并实现了板条内能量的均匀提取。根据1、3通放大功率计算了相应的增益系数,并简要分析了多通放大结构对放大自发辐射(ASE)的抑制作用。An end pumped Nd： YAG slab laser amplifier is presented. Low doped and composited Nd： YAG slab is used to obtain continuous wave output power of 330 W and beam qualities of Mx^2 ： 1.23, My^2 ： 1.73 under the 3 passes amplification stucture. Taking advantage of 4f image system, the loss from light cutoff is reduced and the uniformed energy extraction is realized. In addition, gain coefficients are calculated by the output power of single and multiple pass amplifications. It is also investigated that the multiple amplification structure is good to restrain the amplified spontaneous emission.

关 键 词：激光器 板条激光放大器 端面抽运 光束质量 波前 增益系数 

分 类 号：TN248.1[电子电信—物理电子学]