| 双轴晶体中非共线相位匹配二次谐波产生现象分析 |
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| 引用本文： | 杨学林,谢绳武.双轴晶体中非共线相位匹配二次谐波产生现象分析[J].光学学报,1995,15(8):005-1009. |
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| 作者姓名： | 杨学林 谢绳武 |
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| 作者单位： | 上海交通大学应用物理系 |
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| 基金项目： | 上海市科委自然科学基金 |
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| 摘 要： | 激光束与其散射光束在晶体中发生非线性和频作用，在满足非共线相位匹配条件时，可观察到二次谐波环的现象。本文以拆射率主轴坐标ｘｏｚ平面为例，推导出了双轴晶体中环参数的近似表达式。并用计算机得出了精确数值解，与实验观察到环的形状完全一致，提出了一种寻找最佳二次谐波产生方向的方法。
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| 关 键 词： | 非共线相位匹配 二次谐波 双轴 晶体 |
| 收稿时间： | 1994/12/1 |
Analysis of Non-Collinear Phase Matching Second Harmonic Generation Phenomenon in Biaxial Crystals |
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| Yang Xuelin, Xie Shengwu.Analysis of Non-Collinear Phase Matching Second Harmonic Generation Phenomenon in Biaxial Crystals[J].Acta Optica Sinica,1995,15(8):005-1009. |
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| Authors: | Yang Xuelin Xie Shengwu |
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| Abstract: | Noncollinear second-harmonic-generation (SHG) processes involving an unfocused laser ham and itS scattered radiation produce one or more cones of phasematched second harmonic. On the principal xoz plane, the expressions of the ring parameters in terms of .the indices of refraction and geometry in biaxial crystals are derived. The numeric solutions are in good agreement with observed rings. A method for determining the optimum direction in SHG is suggested. |
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| Keywords: | noncollinear phase matching second harmonic generation rings biaxial crystals |
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