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| 氧化还原处理对Mg:Ce:Cu:LiNbO_3晶体光折变性能的影响 | |
| 引用本文： | 范叶霞,王义杰,李洪涛.氧化还原处理对Mg:Ce:Cu:LiNbO_3晶体光折变性能的影响[J].硅酸盐学报,2009,37(5). |
| 作者姓名： | 范叶霞 王义杰 李洪涛 |
| 作者单位： | 1. 哈尔滨理工大学材料科学与工程学院,哈尔滨,150080 2. 哈尔滨理工大学应用科学学院,哈尔滨,150001 3. 哈尔滨工业大学材料科学与上程学院,哈尔滨,150001 |
| 摘 要： | 在同成分铌酸锂(LiNbO3,LN)晶体中,掺入的摩尔分数分别为0.1%.3%,6%MgO,掺入0.1%(质量分数,下同)CuO和0.05%CeO2.采用提拉法生长了优质的Mg:Ce:Cu:LN晶体,对生长后的晶体极化后分别进行了氧化和还原处理.测定了Mg:Ce:Cu:LN晶体的紫外-可见光吸收光谱和光折变性能.结果表明:与未经氧化和还原处理的晶体相比,在掺MgO量为1%和3%时.经氧化处理的晶体的吸收边发生了紫移,经还原处理的晶体的吸收边发生了红移;而在掺MgO量为6%时,氧化处理后晶体的吸收边紫移趋势小明碌.氧化处理后晶体的抗光损伤能力R减弱,而还原处理后晶体的R增强:而当掺入MgO为6%时,Mg:Ce:Cu:LN晶体的R最大,Mg:Ce:Cu:LN晶体的R比Ce:Cu:LN晶体高2个数量级.结合铌酸锂晶体的锂空位缺陷模型解释了有关实验结果. |
| 关 键 词： | 镁、铈和铜共掺杂铌酸锂晶体 吸收边 抗光损伤能力 提拉法生长 |
INFLUENCE OF OXIDATION AND REDUCTION ON PHOTOREFRACTIVE PROPERTIES OF Mg:Ce:Cu:LiNbO_3 SINGLE CRYSTALS |
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| FAN Yexia,WANG Yijie,LI Hongtao.INFLUENCE OF OXIDATION AND REDUCTION ON PHOTOREFRACTIVE PROPERTIES OF Mg:Ce:Cu:LiNbO_3 SINGLE CRYSTALS[J].Journal of The Chinese Ceramic Society,2009,37(5). | |
| Authors: | FAN Yexia WANG Yijie LI Hongtao |
| Affiliation: | 1.School of Material Science and Engineering;Harbin University of Science and Technology;Harbin 150080;2.Applied Science College;3.School of Material Science and Engineering;Harbin Institute of Technology;Harbin 150001;China |
| Abstract: | Mg:Ce:Cu:LiNbO3(Mg:Ce:Cu:LN) crystals doped with 0,1%(in mole,the same below),3%,6%MgO,and 0.10%(in mass,the same below) CeO2 and 0.05%CuO respectively were grown by the Czochralski method from congruent LN melting.After polarization,the crystals were oxidized and reduced.The ultraviolet-visible absorption spectra and the photorefractive properties of the three kinds of Mg:Ce:Cu:LN crystals were measured.The experimental results that compared to grown crystals,when doped-Mg content of 1% and 3%,the absorpti... |
| Keywords: | magnesium cerium and copper triply-doped lithium niobate crystal absorption edge optical damage resistance ability Czochralski method |
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