| 可见光诱导铌酸锂晶体畴反转 |
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| 引用本文： | 刘宏德,胡茜,王文杰,吴日雯,李晓春,陈绍林,刘士国,孔勇发.可见光诱导铌酸锂晶体畴反转[J].南开大学学报,2007,40(2):109-112. |
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| 作者姓名： | 刘宏德 胡茜 王文杰 吴日雯 李晓春 陈绍林 刘士国 孔勇发 |
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| 作者单位： | 南开大学弱光非线性光子学教育部重点实验室,天津300457 |
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| 摘 要： | 研究了在可见光诱导条件下的近化学计量比掺镁铌酸锂的反转电压与光强之间的关系.并实现了利用可见光对晶体畴反转进行可控操作和实时监测.发现晶体的反转电压随光强增大而下降,最大降幅达到70%左右.探寻了可见光诱导铌酸锂晶体畴反转的形成机制,认为光诱导晶体畴反转的主要原因是光激载流子迁移改变了晶体内部的局域电场,造成了晶体极化反转电压的降低.
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| 关 键 词： | 近化学计量比掺镁铌酸锂 畴反转 光诱导 可见光诱导 铌酸锂晶体 畴反转 Crystals Lithium Niobate Inversion Domain 极化反转 局域电场 迁移 载流子 形成机制 发现 实时监测 可控操作 利用 关系 光强 掺镁 近化学计量比 |
| 文章编号： | 0465-7942(2007)02-0109-04 |
| 修稿时间： | 12 20 2006 12:00AM |
Study on Light-Induced Domain Inversion in Lithium Niobate Crystals |
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| Liu Hongde,Hu Qian,Wang Wenjie,Wu Riwen,Li Xiaochun,Chen Shaolin,Liu Shiguo,Kong Yongfa.Study on Light-Induced Domain Inversion in Lithium Niobate Crystals[J].Acta Scientiarum Naturalium University Nankaiensis,2007,40(2):109-112. |
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| Authors: | Liu Hongde Hu Qian Wang Wenjie Wu Riwen Li Xiaochun Chen Shaolin Liu Shiguo Kong Yongfa |
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| Institution: | The Key Laboratory of Weak-Light Nonlinear Photonics of Ministry of Education, Nankai University, Tianjin 300457, China |
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| Abstract: | The relation of light intensity and the domain switching voltage of the near- stoichiometric Mg-doped lithium niobate was studied. We found that the visible light-induced switching voltage decreases about 70 % at maximum with intensity increasing. We realized controllable operation and in-situ visualization in the process of the visible light-induce domain switching. We studied the mechanism of the visible light-induced domain switching in the lithium niobate crystals, and considered that the main factor is the movement of light-induced carrier, which modified the local electric field in the crystals and then resulted in the reduction of the domain switching voltage. |
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| Keywords: | near-stoichiometric Mg-doped lithium niobate domain switch light-induced |
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