采用提拉法生长Nd掺杂原子数分数为1%的高质量的Nd:Lu3Al5O12(Nd:LuAG)晶体。对晶体的光谱性能进行了表征。研究发现，Nd:LuAG晶体与相同掺杂浓度的Nd:YAG晶体均具有相似的峰形和峰位，但特征吸收峰和荧光峰均发生了1 nm的红移现象。Nd:LuAG晶体具有比Nd:YAG和NdGGG晶体更长的荧光寿命和更宽的吸收线宽。在抽运功率为900 mW的钛宝石激光器抽运下，Nd:LuAG晶体获得了420 mW的连续激光输出，斜率效率为47.5%，激光抽运阈值为22 mW。

We investigate the spectra and scintillation properties of Ce:YAlO3, Ce:Y3Al5O12, and Ce:LaAlO3. For Ce:YAlO3, the excitation spectrum is very similar with the absorption spectrum; for Ce:Y3Al5O12 and Ce:LaAlO3, the excitation spectra are different from the absorption spectra. Further, Ce:YAlO3 has better scintillation performance than Ce:Y3Al5O12; whereas Ce:LaAlO3 has not demonstrated scintillation performance to date. We also provide reasonable explanations for these experimental phenomena from the viewpoint of energy level structure.

采用提拉法生长Yb³⁺掺杂原子数分数为10%高质量的Yb:Lu3Al5O12(Yb:LuAG)晶体。对晶体在不同气氛下退火的光谱性能进行了表征。研究发现,吸收光谱中363和562 nm附近的吸收带与Yb2+有关。晶体在空气气氛下退火后,测得的荧光光谱强度最强,荧光寿命最长。增益截面曲线的研究表明Yb:LuAG晶体具有宽的发射带。在抽运功率为9.59 W的激光二极管(LD)抽运下,Yb:LuAG晶体获得3.05 W的连续激光输出,斜率效率为41.7%,激光抽运阈值为40 mW。