| 几种光折变晶体二波耦合特性研究 |
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| 引用本文： | 许心光,丁合真,胡居广,邵宗书,陈焕矗,宋立焕.几种光折变晶体二波耦合特性研究[J].山东大学学报(理学版),1998(3). |
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| 作者姓名： | 许心光 丁合真 胡居广 邵宗书 陈焕矗 宋立焕 |
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| 作者单位： | 山东大学晶体材料国家重点实验室 |
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| 基金项目： | 国家攀登计划,国家自然科学基金 |
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| 摘 要： | 从理论上推导并分析了几种４ｍｍ点群的光折变晶体ＢａＴｉＯ３，ＫＴＮ，ＳＢＮ，ＫＮＳＢＮ的二波耦合特性．理论和实验结果都表明前向二波耦合与相向二波耦合有不同能量转移特性．相向二波耦合能量转移方向不仅依赖晶体中光生载流子的电荷符号及入射光与晶体ｃ轴相对取向，而且依赖于晶体电光系数各分量的相对大小．
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| 关 键 词： | 光折变晶体 4mm点群 电光系数 二波耦合 |
COUPLING CHARACTERISTICS OF TWO WAVE MIXING IN SOME OF PHOTOREFRACTIONAL CRYSTAL |
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| Abstract: | Characteristics of two wave mixing is investigated in BaTiO 3,KTN,KNSBN and SBN crystal.The results of experiment and theoretical analysis show that the energy transfer characteristics of contradirectional two wave mixing (CTWM) has much differences from forward two wave mixing (FTWM).The energy transfer direction of CTWM depends not only on the orientation of the crystal caxis and the sign of the light induced carriers,but also on the electro optic coefficients.Theoretical analysis of CTWM is very well agreement with the experimental observations. |
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| Keywords: | photorefractional crystals 4 mm point group electro optic coefficients two wave mixing |
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