| 超高斯光束二次谐波转换中的衍射和离散效应 |
| |
| 引用本文： | 何钰娟,蔡邦维,张彬,魏晓峰,马驰,袁静.超高斯光束二次谐波转换中的衍射和离散效应[J].光子学报,2000,29(6):497-500. |
| |
| 作者姓名： | 何钰娟 蔡邦维 张彬 魏晓峰 马驰 袁静 |
| |
| 作者单位： | 1. 四川大学光电系,成都,610064
2. 中国工程物理研究院核物理与化学研究所激光技术工程部,成都525信箱80分箱,610003 |
| |
| 摘 要： | 采用KDP晶体Ⅰ类匹配的方案,以超高斯光束的二倍频为例,通过求解包含衍射、离 散的非线性耦合波方程,考虑衍射和离散两种因素对二次谐波转换效率的影响并对其作数值 模拟计算。结果表明,衍射的影响非常小。当入射超高斯光束口径较小时,离散效应的存在将 大大降低倍频转换效率。随着入射光束口径的增大,离散效应的影响相应地减小,甚至可以 忽略。
|
| 关 键 词： | 衍射 离散 超高斯光束 二次谐波产生 |
| 收稿时间： | 1999-11-30 |
| 修稿时间： | 1999-11-30 |
THE DIFFRACTION AND WALKOFF IN THE SECOND HARMONIC GENERATION OF SUPER-GAUSSIAN BEAM |
| |
| He Yujuan,Cai Bangwei,Zhang bin,Wei Xiaofeng,Ma Chi,Yuan Jing.THE DIFFRACTION AND WALKOFF IN THE SECOND HARMONIC GENERATION OF SUPER-GAUSSIAN BEAM[J].Acta Photonica Sinica,2000,29(6):497-500. |
| |
| Authors: | He Yujuan Cai Bangwei Zhang bin Wei Xiaofeng Ma Chi Yuan Jing |
| |
| Institution: | 1. Optronics Department, Sichuan University, Chengdu 610064;2. Institute of Nuclear Physics &; Chemistry, CAEP, Chengdu, Box 525-80, Post code 610003 |
| |
| Abstract: | Using the type I matching scheme and taking the second harmoic generation of superGaussian beam in a KDP crystal for example,we have worked out the effects of diffraction and walkoff to doubling conversion efficiency by solving the coupling wave equations of doubling including diffraction and walkoff. The result indicates that the effect of diffration is very small. When the spot size of the input super-Gaussian beam is small,the walkoff is very deleterious to doubling conversion. At the same time,along with the enlarging of beam spot size, the effect of walkoff is smaller,even ignored. |
| |
| Keywords: | Diffraction Walkoff Super-Gaussian beam Second harmonic generation |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《光子学报》浏览原始摘要信息 |
| 点击此处可从《光子学报》下载免费的PDF全文 |
|
