量子电子学报 ›› 2021, Vol. 38 ›› Issue (2): 160-166.

• “先进光学晶体”专辑 • 上一篇    下一篇

直径3英寸钆镓石榴石晶体生长及性能研究

程毛杰1;2;3, 张会丽1;3, 董昆鹏1;2, 权聪1;2, 胡伦珍1;2, 韩志远1;2, 孙敦陆1;3∗   

  1. 1 中国科学院合肥物质科学研究院安徽光学精密机械研究所晶体材料研究室, 安徽合肥230031; 2 中国科学技术大学, 安徽合肥230026; 3 安徽省先进激光技术实验室, 安徽合肥230037
  • 收稿日期:2020-11-30 修回日期:2020-12-24 出版日期:2021-03-28 发布日期:2021-03-29
  • 通讯作者: E-mail: dlsun@aiofm.ac.cn E-mail:dlsun@aiofm.ac.cn
  • 作者简介:程毛杰( 1982 - ), 安徽怀宁人, 博士生, 工程师, 主要从事晶体生长及加工方面的研究。E-mail: agcrystal@aiofm.ac.cn
  • 基金资助:
    Supported by General Program of National Natural Science Foundation of China (国家自然科学基金面上项目, 51872290), Natural Science Foundation of Anhui Province (安徽省自然科学基金, 1908085QE176)

Growth and properties of gadolinium gallium garnet crystal with 3 inches diameter

CHENG Maojie1;2;3, ZHANG Huili1;3, DONG Kunpeng1;2, QUAN Cong1;2, HU Lunzheng1;2, HAN Zhiyuan1;2, SUN Dunlu1;3∗   

  1. 1 Crystal Material Laboratory, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230026, China; 3 Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China
  • Received:2020-11-30 Revised:2020-12-24 Published:2021-03-28 Online:2021-03-29

摘要: 采用熔体提拉法, 通过设计合理的晶体生长温场结构和优化生长气氛等, 有效抑制了镓挥发, 结合原料 预处理及缩颈等工艺, 成功生长出了高质量的直径3 英寸Gd3Ga5O12(GGG) 晶体。对其晶体结构、结晶质量、 位错形貌及透过光谱等进行了详细研究。X 射线粉末衍射(XRD) 表明该晶体为单相且晶格常数为1.2379 nm; (111) 结晶面的X 射线摇摆曲线(XRC) 显示晶体具有较好的结晶质量; 原子力显微镜(AFM) 测量晶体(111) 抛 光片的表面粗糙度约为0.203 nm; 观察分析了晶体(111) 结晶面的位错腐蚀坑, 位错密度为28∼85 个/cm2; 透过 光谱显示晶体具有较宽的透光波段, 并拟合出了塞米尔方程系数。结果表明生长的三英寸GGG 晶体可以作为 磁光外延膜的衬底材料和激光基质, 并且较大的尺寸能够有效提高晶体使用的取材效率和一致性。

关键词: 材料, 3 英寸GGG 晶体, 磁光衬底, 晶体质量, 表面形貌, 位错, 透过谱

Abstract: As the gallium volatilization is effectively inhibited by designing suitable temperature field structure and optimizing the growth atmosphere, a diameter of 3 inches Gd3Ga5O12 (GGG) crystal with high quality is successfully grown by Czochralski method with the combining of raw material pretreatment and necking technology. And the crystal structure, crystalline quality, dislocation morphology and transmission spectrum are investigated in detail. The X-ray diffraction (XRD) shows that the as-grown crystal is single phase and the lattice constant is 1.2379 nm. The X-ray rocking curve (XRC) exhibits that the crystal possesses high crystalline quality. The surface roughness of (111) crystal surface is measured to be about 0.203 nm by atomic force microscopy (AFM). The dislocation corrosion pits on the crystal surface (111) are observed and analyzed, and it shows that the dislocation density ranges from 28 /cm2 to 85 /cm2. The transmission spectrum indicates that the crystal has wide transmittance band and the Sellmeier equation coefficients are fitted. All the results indicate that the 3 inches GGG crystal can be applied as the substrate material of the magneto-optical epitaxial film and laser host, and larger-size crystal can effectively improve the utilization efficiency and homogeneity.

Key words: material, 3 inches GGG crystal, magneto-optical substrate, crystalline quality, surface topography, dislocation, transmission spectrum

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