The influence of optical centers concentration profiles on thermal fields under high-power end-face diode pumping is analyzed using numerical model. It is shown that non-uniform distribution profiles of optical centers concentration are very promising for high average pump power laser amplifiers. The possibility of creating concentration profiles of optical centers in gradient-activated crystals with YAG matrix with a specified distribution along the growth axis of the crystal is demonstrated. A technology of growing gradient-activated single crystal involving active mirror as active element is proposed and discussed.

中文翻译：

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YAG：具有非线性掺杂离子分布的Yb晶体是高平均功率激光系统中有希望的有源元件

利用数值模型分析了大功率端面二极管泵浦下光学中心浓度分布对热场的影响。结果表明，对于高平均泵浦功率激光放大器而言，光学中心浓度的不均匀分布轮廓非常有前途。证明了在具有沿晶体生长轴具有指定分布的YAG矩阵的梯度激活晶体中创建光学中心的浓度分布的可能性。提出并讨论了一种以有源镜为有源元件的梯度激活单晶生长技术。