摘要
Tb_(3)Sc_(x)Al_(5-x)O_(12)(TSAG)晶体是一种性能优异的磁光晶体材料,解决大尺寸TSAG晶体生长过程中开裂问题对高功率磁光隔离器的应用有着重要的意义。本文采用提拉法晶体生长技术,考察了稀土离子Dy、Lu在晶体生长过程中的分凝规律,分析了Dy、Lu掺杂对TSAG晶体性能的影响。结果表明,Dy、Lu掺杂有助于解决大尺寸TSAG晶体的开裂问题,生长的TSAG晶体均具有良好的内部质量,且所得晶体消光比均大于33 dB。Lu掺杂对TSAG晶体的维尔德常数有一定提升,而Dy掺杂则对TSAG晶体的维尔德常数提升无明显作用。Dy、Lu共掺的TSAG晶体磁光性能与TSAG基本相近,所制备晶体均满足高功率激光隔离器生产要求。
Tb_(3)Sc_(x)Al_(5-x)O_(12)(TSAG)crystal is a magneto optical crystal material with excellent performance.Solving the cracking problem during the growth of large-sized TSAG crystal is of great significance for its application in high-power magneto-optical isolators.The segregation law of Dy and Lu during the crystal growth process with Czochralski method was investigated,and the effect of Dy and Lu doping on the crystal properties TSAG were also clarified.The results indicate that Dy and Lu doping are helpful to solve the cracking problem of large-sized TSAG crystal.The obtained TSAG crystals have good internal quality,and the resulting extinction ratios are all greater than 33 dB.Lu doping improves the Verde constant of TSAG crystals,while Dy doping has no significant effect on the Verde constant of TSAG crystals.The magneto-optical properties of Dy and Lu co-doped TSAG crystals are basically similar to those of TSAG,and the prepared crystals meet the requirements for high-power laser isolators.
作者
张榕贵
陈腾波
李来超
李玉虎
马艳丽
ZHANG Ronggui;CHEN Tengbo;LI Laichao;LI Yuhu;MA Yanli(School of Metallurgical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Xiamen University,Xiamen 361005,China)
出处
《人工晶体学报》
CAS
北大核心
2023年第8期1407-1412,共6页
Journal of Synthetic Crystals
基金
国家重点研发计划(2020YFB1713700)
国家自然科学基金(52264048)
江西省双千计划人才项目(jxsq2018106051)
江西理工大学清江青年拔尖支持计划(JXUSTQJBJ2018005)。
关键词
稀土掺杂
磁光晶体
提拉法
铽钪铝石榴石
分凝
rare earth doping
magneto-optic crystal
Czochralski method
TSAG
segregation
