在采用大面积半导体激光器阵列进行泵浦时,由于能量密度等因素,必须把泵浦光会聚到很小的面积上。而空心导光管作为一种良好的耦合器件,不仅能够实现匀光缩束的功能,还具有高效、简洁、可控制光斑形状等优点。在阐述了采用Duct进行半导体激光器阵列缩束整形的原理后,通过对Duct近似模型的分析,得到了Duct的优化结构参数,并通过光线追迹得到了Duct输出光斑的特性。 When pumping with a large area semiconductor laser array, the pump light must be converged to a small area due to energy density and other factors. Hollow light pipe, as a good coupling device, not only can realize the function of uniform light shrinking but also has the advantages of high efficiency, conciseness and controllable spot shape. After expounding the principle of using Duct to reduce and shape the semiconductor laser array, the optimal structure parameters of Duct are obtained through the analysis of Duct approximate model, and the characteristics of Duct output flare are obtained by ray tracing.