李景照 Li Jingzhao, 陈振强 Chen Zhenqiang, 朱思祁 Zhu Siqi
Abstract
采用Yb：YAG/Cr4+：YAG/YAG键合晶体搭建了紧凑的端面泵浦被动调Q激光器，获得了高峰值功率的1 029 nm短脉冲激光。研究了泵浦功率和初始透过率对脉冲性能的影响及作用机制，对比发现初始透过率为85%的键合晶体，脉冲性能最好，在7.2 W泵浦功率下，脉宽短至3.14 ns，峰值功率高达87 kW。另外还研究了输出光谱随功率的变化规律，发现晶体具有较好的热学性能。这表明，与无掺杂的同基质晶体键合或者降低可饱和吸收体的初始透过率，都有助于获取高峰值功率的短脉冲激光输出。
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采用Yb：YAG/Cr4+：YAG/YAG键合晶体搭建了紧凑的端面泵浦被动调Q激光器，获得了高峰值功率的1 029 nm短脉冲激光。研究了泵浦功率和初始透过率对脉冲性能的影响及作用机制，对比发现初始透过率为85%的键合晶体，脉冲性能最好，在7.2 W泵浦功率下，脉宽短至3.14 ns，峰值功率高达87 kW。另外还研究了输出光谱随功率的变化规律，发现晶体具有较好的热学性能。这表明，与无掺杂的同基质晶体键合或者降低可饱和吸收体的初始透过率，都有助于获取高峰值功率的短脉冲激光输出。
Key concepts: Materials science, Laser, Optics, Composite number, Crystal (programming language), Pulse (music), Power (physics), Ytterbium