| 周期极化掺镁不同组分LiNbO3晶体的研究 |
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| 引用本文： | 陈云琳,郭娟,刘晓娟,楼慈波,陈绍林,许京军,张万林,孔勇发,张光寅.周期极化掺镁不同组分LiNbO3晶体的研究[J].物理学报,2004,53(1):156-159. |
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| 作者姓名： | 陈云琳 郭娟 刘晓娟 楼慈波 陈绍林 许京军 张万林 孔勇发 张光寅 |
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| 作者单位： | 南开大学物理科学学院,天津 300071 |
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| 基金项目： | 国家自然科学基金(批准号：10174040，90101022)，天津市重点自然科学基金和天津市国际合作项目资助的课题. |
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| 摘 要： | 利用气相平衡扩散法研制出掺镁不同组分的LiNbO3晶体，并对其极化特性进行了研究.研究表明晶体的开关电场和自发极化不仅与晶体组分［Li］/［Nb］比有关而且与掺镁量有关，［Li］/［Nb］比为0.973掺入2mol% MgO的近化学比LiNbO3晶体的开关电场仅为1.8kV/mm，是同成分晶体的1/12，且其极化结构的质量要远好于同成分LiNbO3晶体和近化学比LiNbO3晶体.
关键词：
气相平衡扩散
3晶体')" href="#">掺镁LiNbO3晶体
周期极化
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| 关 键 词： | 气相平衡扩散 掺镁LiNbO3晶体 周期极化 |
| 文章编号： | 1000-3290/2004/53(01)/0156-04 |
| 收稿时间： | 2003-01-24 |
A study on periodic poling of different compositions of MgO:LiNbO3 |
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| Chen Yun-Lin,Guo Juan,Liu Xiao-Juan,Lou Ci-Bo,Chen Shao-Lin,Xu Jing-Jun,Zhang Wan-Lin,Kong Yong-Fa and Zhang Guang-Yin.A study on periodic poling of different compositions of MgO:LiNbO3[J].Acta Physica Sinica,2004,53(1):156-159. |
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| Authors: | Chen Yun-Lin Guo Juan Liu Xiao-Juan Lou Ci-Bo Chen Shao-Lin Xu Jing-Jun Zhang Wan-Lin Kong Yong-Fa and Zhang Guang-Yin |
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| Abstract: | LiNbO3 crystals doped with different amount of MgO have been produced using vapor transport equilibration technique. The poling characteristics of the crystals with different MgO doping levels have been investigated. The switching field and the spontaneous polarization Ps of the crystals were expressed as functions of crystal stoichiometry and Mg content. The switching field for the domain reversal in the near stoichiometric crystal with ［Li］/［Nb］=0.973 doped with 2.0mol.% MgO was 1.8kV/mm. This is about one twelfth of the switching field for the congruent crystal, and the pattern of the periodic domain in the crystal is better than in the congruent and stoichiometric crystal. |
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| Keywords: | vapor transport equilibration MgO:LiNbO3 crystal periodic poling |
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