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1.山东大学 晶体材料国家重点实验室, 山东 济南 250100
2.山东理工大学 材料科学与工程学院, 山东 淄博 255000
[ "郝元凯(1998-),男,山东枣庄人,硕士研究生,2021年于南华大学获得学士学位,主要从事磁光晶体的生长与稀土离子掺杂磁光性能的研究。Email: hao.yk@mail.sdu.edu.cn" ]
[ "付秀伟(1987-),男,湖南邵阳人,博士,教授,博士生导师,2016 年于日本早稻田大学获得博士学位,主要从事人工功能晶体的开发及应用(包括压电晶体、激光晶体、磁光晶体等功能晶体的生长及光电器件制备)的研究。 " ]
[ "贾志泰(1981-),男,山西平遥人,博士,教授,博士生导师,2009 年于山东大学晶体材料研究所获得博士学位,主要从事人工晶体的生长及性能的研究。 " ]
收稿日期:2022-03-23,
修回日期:2022-04-07,
纸质出版日期:2022-07-05
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郝元凯,辛显辉,刘蕾等.高质量Tb3Sc2Al3O12磁光晶体的生长及性能[J].发光学报,2022,43(07):1070-1077.
HAO Yuan-kai,XIN Xian-hui,LIU Lei,et al.Growth and Characterization of Tb3Sc2Al3O12 Magneto-optical Crystal[J].Chinese Journal of Luminescence,2022,43(07):1070-1077.
郝元凯,辛显辉,刘蕾等.高质量Tb3Sc2Al3O12磁光晶体的生长及性能[J].发光学报,2022,43(07):1070-1077. DOI: 10.37188/CJL.20220100.
HAO Yuan-kai,XIN Xian-hui,LIU Lei,et al.Growth and Characterization of Tb3Sc2Al3O12 Magneto-optical Crystal[J].Chinese Journal of Luminescence,2022,43(07):1070-1077. DOI: 10.37188/CJL.20220100.
Tb
3
Sc
2
Al
3
O
12
(TSAG)晶体具有高透过率、高激光损伤阈值、低吸收系数以及比Tb
3
Ga
5
O
12
(TGG)更为优异的磁光性能,被认为是理想的磁光材料;但由于晶体在生长过程中会累积大量的热应力,并且出现成分偏析的现象,导致晶体在后期加工和使用过程中容易开裂,严重限制了该晶体的应用。本文通过优化生长工艺,采用提拉法成功生长了高质量且完整无开裂的TSAG磁光晶体。将生长所得的单晶经定向、切割及抛光后获得尺寸合适的样品,并对其热学性能和光学性能进行了系统表征。结果显示,TSAG晶体在400~1 500 nm波段透过率达到84%左右,热学性能优于目前商业化应用较好的TGG晶体,在高功率下应用时变形较小且散热更快,将更好地保护器件安全。TSAG晶体的Verdet常数约为TGG晶体的1.2倍,且晶体生长过程不存在Ga
2
O
3
挥发等问题,制备较为简单,有望在可见近红外波段实现商业化应用。
Tb
3
Sc
2
Al
3
O
12
(TSAG) crystal is attracting much attention for visible and near-infrared isolator applications due to its high transmittance, large laser damage threshold, low absorption coefficient and excellent magneto-optical properties. However, it is difficult to grow large-size crack-free single crystals. In this work,high quality TSAG crystal was successfully grown by the Czochralski method. The transmittance in the wavelength of 400-1 500 nm is as high as 84%. The thermal conductivity is higher than that of commercial Tb
3
Ga
5
O
12
(TGG) crystal. More importantly, the Verdent constant of TSAG is 1.2 times that of TGG crystal. Therefore, TSAG crystal is promising magneto-optical crystal for high power isolator applications.
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