微下拉法生长Tb3AlxGa5-xO12磁光晶体及其性能表征

刘文娇; 张明记; 辛显辉; 郝元凯; 付秀伟; 张健; 贾志泰; 陶绪堂

人工晶体学报, 2023, 52 (1): 8, 网络出版: 2023-03-18

微下拉法生长Tb₃Al_xGa_5-xO₁₂磁光晶体及其性能表征

Preparation and Properties of Tb₃Al_xGa_5-xO₁₂ Magneto-Optical Crystal by Micro-Pulling-Down Method

论文大纲

刘文娇 ^1,*张明记 ¹辛显辉 ¹郝元凯 ¹付秀伟 ¹张健 ¹贾志泰 ^1,2陶绪堂 ¹

作者单位

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

磁光晶体晶体生长微下拉法铽基石榴石 Tb3Ga5O12 Tb3Ga5O12 TAGG TAGG magneto-optical crystal crystal growth micro-pulling-down method Tb3+-based garnet

摘要

Tb3Ga5O12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Tb3Al5O12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Tb3AlxGa5-xO12(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Tb3Ga5O12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。

Abstract

Tb3Ga5O12 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. Tb3Al5O12 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 Tb3AlxGa5-xO12 (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 Tb3Ga5O12 crystal, which is a very promising low-cost magneto-optical material for high power laser systems.

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刘文娇, 张明记, 辛显辉, 郝元凯, 付秀伟, 张健, 贾志泰, 陶绪堂. 微下拉法生长Tb₃Al_xGa_5-xO₁₂磁光晶体及其性能表征[J]. 人工晶体学报, 2023, 52(1): 8. LIU Wenjiao, ZHANG Mingji, XIN Xianhui, HAO Yuankai, FU Xiuwei, ZHANG Jian, JIA Zhitai, TAO Xutang. Preparation and Properties of Tb₃Al_xGa_5-xO₁₂ Magneto-Optical Crystal by Micro-Pulling-Down Method[J]. Journal of Synthetic Crystals, 2023, 52(1): 8.

微下拉法生长Tb₃Al_xGa_5-xO₁₂磁光晶体及其性能表征

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