| LiNbO3:Fe晶体中双光束耦合衍射效率的研究 |
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| 引用本文： | 陆改玲,杨立森,陈玉和,陈宝东.LiNbO3:Fe晶体中双光束耦合衍射效率的研究[J].内蒙古师范大学学报(自然科学版),2007,36(2):150-152. |
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| 作者姓名： | 陆改玲 杨立森 陈玉和 陈宝东 |
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| 作者单位： | 内蒙古师范大学物理与电子信息学院 内蒙古呼和浩特010022 |
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| 基金项目： | 国家自然科学基金;内蒙古自然科学基金 |
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| 摘 要： | 对两束相干光写入稳态相位栅的衍射效率进行数值模拟,发现在某一角度范围内衍射效率有一最大值存在.测定了双光束耦合时不同入射角度光子晶格的衍射效率,实验曲线表明,衍射效率随写入角度(光子晶格周期)的变化也有极大值存在,并且与数值模拟所对应的角度是吻合的.由于衍射效率与写入的光子晶格的折射率调制度Δn成线性关系,因而证实了不同写入角度的光子晶格有不同的折射率调制度,并有极大值存在.
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| 关 键 词： | 双光束耦合 衍射效率 写入角度 折射率调制度 |
| 文章编号： | 1001-8735（2007）02-0150-03 |
| 收稿时间： | 2006-09-18 |
| 修稿时间： | 2006年9月18日 |
Study on Diffraction Efficiency in the LiNbO3 :Fe Crystal Using Two Wave Mixing |
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| LU Gai-ling,YANG Li-sen,CHEN Yu-he,CHEN Bao-dong.Study on Diffraction Efficiency in the LiNbO3 :Fe Crystal Using Two Wave Mixing[J].Journal of Inner Mongolia Normal University(Natural Science Edition),2007,36(2):150-152. |
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| Authors: | LU Gai-ling YANG Li-sen CHEN Yu-he CHEN Bao-dong |
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| Institution: | College of Physics and Electronic Information, Inner Mongolia Normal University , Huhhot 010022,China |
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| Abstract: | Diffraction efficiency was simulated theoretically in the stable state phase during the double coherent light coupling and a maximum value of diffraction efficiency was discovered in some angle scope.Experimentally,diffraction efficiency of photon crystal lattice was measured in different read-in angle.The results indicated that it reach the extreme value when the read-in angle has the value corresponding to the diffraction efficiency in theory.Considering simple linear relationship between the diffraction efficiency and refractive index moudulation degree,it can be confirmed that the photon crystal with different read-in angle really have the different refractive index moudulation degree,and has the maximum value. |
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| Keywords: | two-wave mixing diffraction efficiency read-in angle refractive index moudulation |
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