欢迎访问《人工晶体学报》官方网站,今天是

人工晶体学报 ›› 2026, Vol. 55 ›› Issue (7): 1120-1126.DOI: 10.16553/j.cnki.issn1000-985x.2026.0067

• 研究论文 • 上一篇    下一篇

镝铝石榴石单晶光纤生长与性能研究

谭俊成1,2,3(), 林可1,2,3, 张沛雄1,2,3(), 陈振强1,2,3   

  1. 1.广东省晶体与激光工程技术研究中心,广州 510632
    2.广东省光纤传感与通信重点实验室,广州 510630
    3.暨南大学物理与光电工程学院,广州 510632
  • 收稿日期:2026-04-20 出版日期:2026-07-20 发布日期:2026-08-04
  • 通信作者: 张沛雄,博士,教授。E-mail:pxzhang@jnu.edu.cn
  • 作者简介:谭俊成(2000—),男,广东省人,博士研究生。E-mail:oc_120816@163.com
    张沛雄,博士,暨南大学理工学院教授。《人工晶体学报》青年编委。广东省晶体材料和晶体激光技术与应用工程研究中心副主任,全国人工晶体标准化技术委员会委员,中国稀土学会稀土晶体专委会委员。主要研究方向为体块光电功能晶体材料及激光技术,在新型稀土中红外氟化物激光晶体的生长和发光调控、超快激光晶体光谱展宽调控、稀土掺杂铌酸锂/钽酸锂多功能晶体及其器件、磁光晶体研制、新型全固态激光技术等方面开展原创性研究工作。目前已发表100多篇学术论文,获授权发明专利10多项。
  • 基金资助:
    国家自然科学基金(62375106);国家自然科学基金(51972149);国家自然科学基金(51872307);国家自然科学基金(51702124);广州市科技计划(2024A03J0240)

Growth and Properties of Disprosium Aluminum Garnet Single-Crystal Optical Fibers

TAN Juncheng1,2,3(), LIN Ke1,2,3, ZHANG Peixiong1,2,3(), CHEN Zhenqiang1,2,3   

  1. 1.Guangdong Provincial Engineering Research Center of Crystal and Laser Technology,Guangzhou 510632,China
    2.Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications,Guangzhou 510630,China
    3.College of Physics & Optoelectronic Engineering,Jinan University,Guangzhou 510632,China
  • Received:2026-04-20 Online:2026-07-20 Published:2026-08-04

摘要: 随着高功率固态激光器和光纤激光器的发展,对可见光-近红外波段光学隔离器的需求日益增加,亟须探索新型磁光晶体以满足发展需求。本文采用激光加热基座法生长高质量镝铝石榴石(Dy3Al5O12, DyAG)单晶光纤,探讨了生长工艺,并研究了基本物理性能。XRD图谱表明,DyAG晶体结构与传统石榴石一致,属于立方晶系,空间群为${Ia} \overline{3} d$,晶胞参数a=b=c=11.974 Å,同时晶体样品具备较窄的衍射峰半峰全宽,表明晶体结晶质量良好。采用第一性原理计算了DyAG的电子结构,结果表明其带隙较宽,为4.311 eV,折射率在波长大于500 nm的波段维持在1.93左右。进一步表征并分析了单晶光纤的光学性能,发现其在475~700 nm波段具有良好光透过性能,透过率达到77.5%左右,接近理论值(80.8%),有望应用于475~700 nm波段的磁光器件中。

关键词: 单晶光纤; DyAG; 激光加热基座法; 晶体生长; 磁光晶体

Abstract: With the development of high-power solid-state lasers and fiber lasers, the demand for optical isolators in the visible to near-infrared region is gradually increasing, necessitating the exploration of novel magneto-optical crystals to meet development requirements. In this paper, high-quality dysprosium aluminum garnet (Dy3Al5O12, DyAG) single-crystal fibers were grown using the laser-heated pedestal growth method. The growth process of the crystals was investigated, and their fundamental physical properties were studied. XRD patterns show that, the crystal structure of DyAG fiber is consistent with that of conventional garnets, belonging to the cubic crystal system with space group of ${Ia} \overline{3} d$ and lattice parameters of a=b=c=11.974 Å. The crystal samples exhibit narrow diffraction peak full width at half maximum, indicating excellent crystalline quality. The electronic structure of DyAG fiber was calculated using first-principles method and the results reveal a relatively wide bandgap of 4.311 eV, with a refractive index maintained at approximately 1.93 for wavelengths greater than 500 nm. Further characterization and analysis of the crystal's optical properties reveal its excellent light transmittance in the wavelength range from 475 nm to 700 nm, achieving a transmittance of 77.5% which is nearly reaching the theoretical value of 80.8%. This makes it promising for application in magneto-optical devices operating within this spectral band.

Key words: single-crystal fiber; DyAG; laser heated pedestal growth method; crystal growth; magneto-optical crystal

中图分类号: