Transparent Dy:Y2O3 ceramics with various doping concentrations were fabricated by spark plasma sintering (SPS). Their optical characteristics, including emission cross-sections and nonlinear absorption properties, were evaluated. The results show that Dy:Y2O3 ceramics are promising as a new candidate for 3-μm laser gain medium and passive Q-switch material. A passive Q-switching of a 2795 nm Er:YAP laser with a Dy:Y2O3 ceramic saturable absorber was performed to demonstrate the potential of this material.

中文翻译：

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Dy掺杂Y2O3透明陶瓷作为中红外激光介质和可饱和吸收体

通过放电等离子体烧结 (SPS) 制备了具有不同掺杂浓度的透明 Dy:Y2O3 陶瓷。评估了它们的光学特性，包括发射截面和非线性吸收特性。结果表明，Dy:Y2O3 陶瓷有望成为 3-μm 激光增益介质和无源 Q 开关材料的新候选材料。使用 Dy:Y2O3 陶瓷可饱和吸收器对 2795 nm Er:YAP 激光器进行无源调Q，以证明该材料的潜力。