摘要
在氧化锂(Li2O)摩尔分数(下同)为48.6%～58%的LiNbO3中掺入0.1%的氧化铈(CeO2)和质量分数为0.03%的氧化铁(Fe2O3),用提拉法技术生长出高光学质量的具有不同摩尔比n(Li)/n(Nb)的Ce:Fe:LiNbO3晶体。通过紫外-可见光谱和红外光谱测试了晶体样品的组成和缺陷结构。通过二波耦合实验系统研究了Ce:Fe:LiNbO3晶体样品的光折变性能。结果表明:晶体样品随n(Li)/n(Nb)比增加,样品的衍射效率降低,动态范围降低,但是,全息响应速率和光折变灵敏度提高。
The Ce （0.1% in mole）：Fe （0.03% in mass）：LiNbO3 crystals with various [Li]/[Nb] ratios were grown by the Czochralski method from melts having compositions varying between 48.6%（in mole, the same below） and 58% Li2O. The crystal composition and defect structure were analyzed by the ultraviolet-visible （UV-Vis）and infrared （IR） spectroscopy. The photorefractive properties of the Ce：Fe：LiNbO3 crystals were experimentally studied by using the two-wave coupling method. The results of the two-wave coupling experiments show that as the molar ratio n（Li）/n（Nb） increased, the diffraction efficiency and dynamic range decreased, but the holographic response speed and photorefractive sensitivity increased.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2007年第6期765-769,共5页
Journal of The Chinese Ceramic Society
关键词
掺杂铌酸锂晶体
晶体缺陷
二波耦合
光折变性能
提拉法
doped lithium niobate crystal
crystal defect structure
two-wave coupling
photorefractive property
Czochralski method
