| Ce:Fe:LiNbO3晶体的生长及光折变性能 |
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| 引用本文： | 徐朝鹏.Ce:Fe:LiNbO3晶体的生长及光折变性能[J].硅酸盐学报,2007,35(6):765-769. |
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| 作者姓名： | 徐朝鹏 |
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| 作者单位： | 燕山大学信息科学与工程学院光电子工程系,河北,秦皇岛,066004 |
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| 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.
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| 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 |
| 文章编号： | 0454-5648（2007）06-0765-05 |
| 修稿时间： | 2007-01-162007-02-01 |
GROWTH AND PHOTOREFRACTIVE PROPERTIES OF Ce:Fe:LiNbO3 CRYSTALS |
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| XU Zhaopeng.GROWTH AND PHOTOREFRACTIVE PROPERTIES OF Ce:Fe:LiNbO3 CRYSTALS[J].Journal of The Chinese Ceramic Society,2007,35(6):765-769. |
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| Authors: | XU Zhaopeng |
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| Affiliation: | Department of Optoelectronic Engineering, School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China |
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| Abstract: | The Ce(0.1%in mole):Fe(0.03%in mass):LiNbO 3crystals with variousLi]/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:LiNbO 3crystals were experimentally studied by using the two-wave coupling method.The results of the two-wave cou-pling 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. |
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| Keywords: | doped lithium niobate crystal crystal defect structure two-wave coupling photorefractive property Czochralski method |
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