Fabrication and kW-level MOPA laser output of planar waveguide YAG/Yb:YAG/YAG ceramic slab
Fabrication and kW-level MOPA laser output of planar waveguide YAG/Yb:YAG/YAG ceramic slab
复制标题
平面波导YAG/Yb:YAG/YAG陶瓷板的制作及千瓦级MOPA激光输出
DOI：
10.1111/jace.16040
复制
发表时间：
2019
影响因子：
3.9
通讯作者：
Li Jiang
中科院分区：
文献类型：
--
作者：
Jiang Nan;Lin Weiping;Zhao Yu;Wang Juntao;Gao Qingsong;Qu Haiyun;Ge Lin;Xie Tengfei;Liu Qiang;Pan Yubai;Li Jiang
采用流延成型结合真空烧结和热等静压的方法，制备了高质量的YAG/10 at.%成功制备了Yb：YAG/YAG陶瓷。对于在1750°C下预烧结30小时，然后在1700°C下在200 MPa氩气中HIP 3小时的样品，在400 nm处的在线透射率达到82.5%，平均晶粒尺寸为~17.1 μm。Yb离子在包层YAG层和芯层Yb：YAG层接触界面的扩散行为由Fick第二定律决定。在此基础上，实现了基于主振荡功率放大（MOPA）结构的1030 nm连续Yb：YAG平面波导陶瓷激光器。经过单次放大后，陶瓷板（60 × 10 × 1 mm 3）的最大输出功率达到1251 W，相应的光-光效率为30.0%，这是目前已知Yb：YAG平面波导陶瓷激光器的最高输出功率。
Using the tape casting method combined with vacuum sintering and hot isostatic pressing, high‐quality planar waveguide YAG/10 at.%Yb:YAG/YAG ceramics were successfully prepared. For the sample presintered at 1750°C for 30 hours and then HIPed at 1700°C for 3 hours in 200 MPa argon, the in‐line transmittance reached 82.5% at 400 nm and the average grain size was ~17.1 μm. The diffusion behaviors of Yb ions across the contact boundary between the cladding YAG layer and the core Yb:YAG layer were determined by Fick's second law. Then, a 1030 nm continuous‐wave (CW) Yb:YAG planar waveguide ceramic laser based on the structure of master oscillator power amplification (MOPA) was realized. After a single‐pass amplification, the maximum output of the ceramic slab (60 × 10 × 1 mm3) reached 1251 W and the corresponding optical‐to‐optical efficiency was 30.0%, which is the highest output power of a Yb:YAG planar waveguide ceramic laser to the best of our knowledge.