Development of Zigzag Active-Mirror amplifier for next generation high power laser systems

我们为下一代高功率激光系统开发了一种新型的ZigZag有源反射镜激光器，并演示了激光器的工作原理。激光材料是一种致密的复合陶瓷，其中三个Yb：YAG层串联组合。连续波工作时，输出功率为214 W，斜率效率为63%。我们还测量了9.8%掺杂Yb：YAG陶瓷的热导率的温度依赖性。此外，还对Yb：YAG单晶样品的热透镜效应和温度升高引起的波前畸变进行了实验研究。

We developed a novel ZigZag Active-Mirror laser for next generation high power laser systems and demonstrated the laser operation. The laser material is a compact composite ceramics, in which three Yb : YAG layers are combined in series. Output power of 214 W with a slope efficiency of 63% has been demonstrated for cw operation. We also measured temperature dependence of thermal conductivity for 9.8% doped Yb : YAG ceramics. In addition, thermal lens effect and wavefront distortion due to temperature rise have experimentally studied for a single Yb : YAG sample.