用于高性能光隔离器的复合稀土铁石榴石ReYbBiIG单晶材料研究

无机材料学报

用于高性能光隔离器的复合稀土铁石榴石ReYbBiIG单晶材料研究

张溪文; 梁军; 张守业

浙江大学硅材料国家重点实验室/材料与化工学院, 杭州 310027

收稿日期:2002-06-11 修回日期:2002-07-04 出版日期:2003-07-20 网络出版日期:2003-07-20

Mixed Rare-earth Iron Garnet ReYbBiIG Single-crystals for High-performance Optical Isolation

ZHANG Xi-Wen; LIANG Jun; ZHANG Shou-Ye

Zhejiang University; State Key Laboratory of Silicon Materials Science; Hangzhou 310027; China

Received:2002-06-11 Revised:2002-07-04 Published:2003-07-20 Online:2003-07-20

摘要/Abstract

摘要： 通过加速旋转坩埚技术和Bi₂O₃/B₂O₃助溶剂生长技术研制新型磁光复合稀土铁石榴石单晶ReYbBiIG(Re:Tb³⁺、Ho³⁺、Y³⁺。从理论上解释了将两种具有相反符号法拉第温度和波长系数的掺铋稀土铁石榴石复合可以显著优化磁光性能,并成功制得具有大磁光优值、低饱和磁化强度、低近红外吸收、极小法拉第温度和波长系数的系列优质磁光单晶(如:Ho_0.85Yb_1.12Bi_1.03Fe₅O₁₂和Tb_2.06Yb_0.46Bi_0.48Fe₅O₁₂等)。研究表明,以新型磁光复合稀土铁石榴石单晶ReYbBiIG作为法拉第转子材料制得的新型光隔离器更适用于WDM光纤通讯系统对宽波段和温度稳定性的要求。

关键词: 复合稀土铁石榴石, 法拉第旋转, 光隔离器, 磁光单晶

Abstract: A new type of magneto-optical Faraday rotation iron garnet bulk single-crystal with composition of ReYbBiIG (Re:Tb³⁺, Ho³⁺, Y³⁺, etc.)
was designed and grown by using Bi₂O₃/B₂O₃ as main flux and using Accelerated Crucible Rotation Technique for single-crystal growth. It is
believed, that through combining of two types of Bi³⁺-substituted rare-earth iron garnets with opposite signs of Faraday rotation temperature
and wavelength coefficients, the magneto-optical properties could be much improved. Series of ReYbBiIG bulk single crystals with large magneto-optical
figure of merit, low magnetic field for saturation, low near-infrared absorption, and small Faraday rotation temperature and wavelength coefficients
were obtained, such as Ho_0.85Yb_1.12Bi_1.03Fe₅O₁₂ and Tb_2.06Yb_0.46Bi_0.48Fe₅O₁₂, etc. Investigation of ReYbBiIG used as Faraday rotator material for optical isolator indicates that our new designed and grown magneto-optical Faraday rotation crystals
are good candidate for temperature stabilized and wideband optical isolators employing in WDM optical fiber communication systems.

Key words: rare-earth iron garnet, Faraday rotation, optical isolator, magneto-optical crystals

中图分类号:

O734

张溪文,梁军,张守业. 用于高性能光隔离器的复合稀土铁石榴石ReYbBiIG单晶材料研究[J]. 无机材料学报.

ZHANG Xi-Wen,LIANG Jun,ZHANG Shou-Ye. Mixed Rare-earth Iron Garnet ReYbBiIG Single-crystals for High-performance Optical Isolation[J]. Journal of Inorganic Materials.