高功率二极管列阵泵浦固体激光泵浦耦合优化设计  

Pump coupling optimization for high-power diode array pumped solid-state laser

作　　者：陈林[1] 景峰[1] 邓青华[1] 段文涛[1] 陈远斌[1] 丁磊[1] 刘建国[1] 罗亦明[1] 刘勇[1] 杨敏[1] 贺少勃[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2011年第6期1439-1443,共5页High Power Laser and Particle Beams

摘　　要：高功率二极管阵列泵浦固体激光系统的核心在于泵浦耦合技术,泵浦耦合直接决定了系统的成本、增益能力、增益均匀性、泵浦引发动态波前畸变和泵浦引发动态光束漂移等关键问题。通过对用于高功率二极管列阵泵浦固体激光系统泵浦耦合优化设计的3维光线追迹方法的研究,从二极管发光远场属性出发,建立其理论计算模型,对高功率激光二极管阵列端面泵浦大口径放大器的一种新型耦合方式——二极管列阵拟球面排列、空心镀银导管耦合进行了优化设计,并开展了泵浦耦合效率、泵浦场均匀性、泵浦场传输性等实验研究,实现了72%耦合效率、5mm内80%传输效率的均匀平顶泵浦耦合场输出,理论计算与实验结果符合较好。Pump coupling is the hard-core of the high-power diode array pumped solid-state laser,which directly determines system cost,gain capacity,gain uniformity,pump-induced wave front distortion,pump-induced beam drift and so on.Based on the three-dimensional ray tracing method,this paper established the theoretical model of the high-power diode array end-pumped solid-state laser.Then a new type of pump coupling was optimized,which adopted a diode array arranged to be spherical and a hollow silver duct,and experiments on pump coupling efficiency and uniformity and transmission of the pump field were conducted.With the optimization,a uniform flat-topped pump-coupled output field was derived within 5 mm range from the duct exit,with 72% coupling efficiency and 80% transmission efficiency.The theoretical and experimental results agree well with each other.

关 键 词：二极管泵浦固体激光 泵浦耦合 理论模拟 光线追迹 

分 类 号：TN242[电子电信—物理电子学]