Growth and Characterization of Tb3Sc2Al3O12 Magneto-optical Crystal

Yuan-kai HAO; Xian-hui XIN; Lei LIU; Qiang-qiang HU; Xiu-wei FU; Zhi-tai JIA; Xu-tang TAO

doi:10.37188/CJL.20220100

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Growth and Characterization of Tb₃Sc₂Al₃O₁₂ Magneto-optical Crystal

Synthesis and Properties of Materials | 更新时间：2022-08-01

- Growth and Characterization of Tb₃Sc₂Al₃O₁₂ Magneto-optical Crystal
  增强出版
- Chinese Journal of Luminescence Vol. 43, Issue 7, Pages: 1070-1077(2022)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(52002218);National Natural Science Foundation of Shandong province(ZR2020QE031)
- DOI：10.37188/CJL.20220100
  CLC： O734
- Published：05 July 2022，
  
  Received：23 March 2022，
  
  Revised：07 April 2022，
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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.

摘要

（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

（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

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。

Abstract

（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

（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.

关键词

TSAG磁光提拉法晶体生长激光

Keywords

TSAGmagneto-opticCzochralski methodcrystal growthlaser

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