微下拉法生长Tb_(3)Al_(x)Ga_(5-x)O_(12)磁光晶体及其性能表征  

Preparation and Properties of Tb_(3)Al_(x)Ga_(5-x)O_(12) Magneto-Optical Crystal by Micro-Pulling-Down Method

作　　者：刘文娇 张明记 辛显辉 郝元凯 付秀伟[1] 张健[1] 贾志泰[1,2] 陶绪堂 LIU Wenjiao;ZHANG Mingji;XIN Xianhui;HAO Yuankai;FU Xiuwei;ZHANG Jian;JIA Zhitai;TAO Xutang(State Key Laboratory of Crystal Materials,Institute of Crystal Materials,Shandong University,Jinan 250100,China;Shandong Research Institute of Industrial Technology,Jinan 250100,China)

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100 [2]山东省工业技术研究院,济南250100

出　　处：《人工晶体学报》2023年第1期8-16,共9页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51502157,52002218);山东省重点研发计划(2018CXGC0410);山东大学青年科学基金(2018WLJH66)。

摘　　要：Tb_(3)Ga_(5)O_(12)晶体是一种具有良好磁光性能的主流商用材料,但生长过程中存在严重的氧化镓挥发问题,导致晶体难以满足高功率应用的发展需求,而菲尔德常数较大的Tb_(3)Al_(5)O_(12)晶体的不一致熔融特性使该晶体难以生长,因此亟需探索新型高质量磁光晶体以满足高功率应用需求。基于此,本文采用微下拉法在高纯氩气和二氧化碳混合气氛下生长了Tb_(3)Al_(x)Ga_(5-x)O_(12)(TAGG)系列高掺铝磁光晶体。摇摆曲线测试结果表明TAGG磁光晶体拥有高结晶质量。透过光谱和磁光特性测试结果表明,与传统Tb_(3)Ga_(5)O_(12)晶体相比,TAGG磁光晶体具有更高的透过率和更大的菲尔德常数,是一种非常有潜力的可应用于高功率激光系统的低成本磁光材料。Tb_(3)Ga_(5)O_(12)crystal is a mainstream commercial material with good magneto-optical performance,but it suffers from serious gallium oxide volatilization during the growth process,which makes it difficult to meet developing requirements in high power applications.Tb_(3)Al_(5)O_(12)crystal,which shows a large Verdet constant,is difficult to grow due to its incongruent melting nature.Therefore,it is urgent to explore new high-quality magneto-optical crystals to meet the needs in high power applications.In this work,a series of Tb_(3)Al_(x)Ga_(5-x)O_(12)(TAGG)magneto-optical crystals with high aluminum content were grown by the micro-pulling-down method in a mixed atmosphere of high-purity nitrogen and carbon dioxide.The result of the rocking curve shows the as-grown TAGG magneto-optical crystal has high crystal quality.The transmittance spectrum and magneto-optical characteristics test results show that,the TAGG crystal shows a higher transparency and a larger Verdet constant compared with the traditional Tb_(3)Ga_(5)O_(12)crystal,which is a very promising low-cost magneto-optical material for high power laser systems.

关 键 词：Tb_(3)Ga_(5)O_(12) TAGG 磁光晶体 晶体生长 微下拉法 铽基石榴石 

分 类 号：O782[理学—晶体学]