| Ce：KNSBN晶体两波耦合动态过程研究 |
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| 引用本文： | 张金平,刘峰,郭庆林,钦明亮,梁宝来,李盼来.Ce：KNSBN晶体两波耦合动态过程研究[J].人工晶体学报,2003,32(5):512-517. |
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| 作者姓名： | 张金平 刘峰 郭庆林 钦明亮 梁宝来 李盼来 |
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| 作者单位： | [1]河北大学物理科学与技术学院，保定071002 [2]通用光电公司，北京100089 |
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| 基金项目： | 河北省自然科学基金(101059)，河北省教育厅博士基金(B2002103) |
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| 摘 要： | 本文在非同时读出条件下，采用实时数据采集系统，实验研究了e偏振光写入Ce：KNSBN晶体两波耦合动态过程，发现不同的写入光强比和写入总光强对晶体中两波耦合过程产生明显的影响；当He-Ne632．8mm激光通过Ce：KNSBN晶体时，光扇效应存在明显的写入光强阈值特性，其阈值约为20mW／cm^2。依据实验结果对考虑光扇影响的耦合波方程进行了修正，其数值计算与实验结果基本符合。
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| 关 键 词： | Ce：KNSBN晶体 两波耦合 动态过程 阈值 光折变 光扇效应 |
Study of the Dynamic Process of Two-wave Coupling with Fanning Effect in Ce:KNSBN Photorefractive Crystal |
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| ZHANG Jin-ping,LIU Feng,GUO Qing-lin,QIN Ming-liang,LIANG Bao-lai,LI Pan-lai.Study of the Dynamic Process of Two-wave Coupling with Fanning Effect in Ce:KNSBN Photorefractive Crystal[J].Journal of Synthetic Crystals,2003,32(5):512-517. |
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| Authors: | ZHANG Jin-ping LIU Feng GUO Qing-lin QIN Ming-liang LIANG Bao-lai LI Pan-lai |
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| Abstract: | At non-simultaneous writing-reading process, the dynamic process of two-wave coupling was studied in this experiment with a synchronous data recording system, while using 632.8nm lasers with e polarization as writing beams. And the results showed that different writing conditions, such as the total incident intensity and the ratio of two writing beams, would influence the temporal behavior of two-wave coupling. In this paper the incidental intensity threshold of the fanning was determined in the Ce: KNSBN crystal, and it is about 20mW/cm2. Wave-coupling equations modified according to experiments, were implemented to simulate the dynamic process of the TWM and the theoretically calculated results are coincident with the experimental data. |
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| Keywords: | Ce: KNSBN crystal photorefractive two-wave coupling dynamic process threshold effect |
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