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研究了烧结温度、晶粒大小以及掺杂离子对固态晶体生长的影响。在热致固态晶体生长的过程中,接近键合面的陶瓷会被单晶诱导而转变成取向一样的单晶,同时形成稳固的键合。实验利用这种方法制备核层为12at%Yb:YAG陶瓷(100 mm),包层为YAG晶体的平面波导结构。这种方法制备的波导结构没有Yb离子的浓度扩散现象。同时,还测试了平面波导结构的激光性能:通过设计平平腔实现了1.14 W,斜率效率16.09%的激光输出;在三镜腔中实现1.83 W,斜率效率9.59%的激光输出。并且激光输出在1027.5 nm到1033.5 nm间连续可调。
The effects of sintering temperature, grain size and doping ions on solid crystal growth were investigated. During the growth of thermally-induced solid-state crystals, the ceramic near the bond face is induced by the single crystal to transform into an oriented single crystal while forming a firm bond. In this experiment, a planar waveguide structure with a 12at% Yb: YAG ceramic (100 mm) and a YAG crystal cladding was prepared by this method. The waveguide structure prepared by this method has no concentration diffusion phenomenon of Yb ions. At the same time, the laser performance of the planar waveguide structure was also tested: laser output of 1.14 W with 16.09% slope efficiency and 1.83 W with slope efficiency of 9.59% were achieved in the three-mirror cavity by designing a flattened cavity. The laser output is continuously tunable from 1027.5 nm to 1033.5 nm.