The output power saturation effect in Yb – Er fibre lasers is experimentally observed. A formula for estimating the saturation power is derived. A method is proposed for measuring the ⁴I_11/2 level lifetime or the concentration of Er ions based on the measurements of the saturation power.

中文翻译：

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Yb – Er 光纤激光器中的输出功率饱和效应

实验观察了Yb-Er光纤激光器的输出功率饱和效应。导出了用于估计饱和功率的公式。提出了一种基于饱和功率测量的⁴ I _{11/2能级寿命或Er离子浓度的测量方法。}