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对于中频感应加热提拉法 (CzochralskiMethod)生长的高掺杂浓度 (原子数分数 0 30 )Yb∶YAG晶体 ,经退火后采用差示扫描量热计法测量了晶体的比热容 ,通过激光脉冲法测量了不同掺杂浓度 (原子数分数 0 0 5～ 0 30Yb∶YAG晶体的热扩散率和热导率。实验表明 ,随着Yb3+ 离子浓度增加 ,Yb∶YAG晶体在 30 0K温度下的导热性能有明显的降低。原子数分数为 0 30的Yb∶YAG晶体的激光实验表明 ,高掺杂浓度Yb∶YAG晶体热导率的降低导致了激光阈值的增加
For the Czochralski method grown at high doping concentration (atomic number 0 30) Yb: YAG crystals, the specific heat capacity of the crystals was measured by the differential scanning calorimeter after annealing, and the laser pulse method was used to measure The thermal diffusivity and thermal conductivity of different doping concentration (atomic number 0 0 5 ~ 0 30Yb:YAG) were studied.The experimental results show that the thermal conductivity of Yb:YAG crystal at 30 0K with the increase of Yb 3 + ion concentration A significant reduction of Yb: YAG crystal atomic number of 0 30 laser experiments show that the high doping concentration of Yb: YAG crystal thermal conductivity led to an increase in the laser threshold