大面阵激光二极管阵列端面泵浦耦合技术  

End-pumped coupling system based on large-aperture laser diode array

作　　者：王振国[1] 段文涛[1] 郑建刚[1] 蒋新颖[1] 严雄伟[1] 李明中[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》2012年第7期1683-1686,共4页High Power Laser and Particle Beams

基　　金：中国工程物理研究院科学技术发展基金项目(2011A0401018);国家自然科学基金项目(108)74157

摘　　要：为了满足常温Yb:YAG激光放大器对泵浦功率密度的要求,设计了一种高缩束比的耦合系统。根据激光二极管(LD)的发光特性,将输出功率为80kW的LD阵列进行拟球面排列,采用正交柱面透镜配合空心导光管进行泵浦耦合,耦合系统的面积缩束比高达86∶1。模拟计算表明,该耦合系统的耦合效率对导光管反射板的反射率依赖性较低,且脱离耦合系统后的泵浦光传输8.5mm后,依然可以保持泵浦光场的轮廓,满足端面泵浦的常温Yb:YAG片状放大器对泵浦耦合系统的要求。In order to meet the pump power density requirements of room-temperature Yb： YAG laser amplifier,a coupling system of high contraction coefficient has been designed.Laser diode（LD） arrays of 80 kW output power are arranged to be spherical.Orthogonal cylindrical lenses and a hollow duct are used for pump-coupling according to luminescence properties of LD.The contraction coefficient is up to 86∶1.Simulations show that the coupling efficiency of the coupling system depends weakly on the reflectivity of the reflectors of the hollow duct.The pump light can transport over a distance of at least 8.5 mm with its shape maintained.The coupling system can meet the requirements of the end-pumped room-temperature Yb：YAG slab amplifier.

关 键 词：激光技术 激光二极管阵列 泵浦耦合 正交柱透镜 空心导管 

分 类 号：TN248.1[电子电信—物理电子学]