| 自散焦介质中光束聚焦的最佳参数选择 |
| |
| 引用本文： | 郭旗,田野,刘承宜. 自散焦介质中光束聚焦的最佳参数选择[J]. 物理学报, 2002, 51(5): 1057-1062 |
| |
| 作者姓名： | 郭旗 田野 刘承宜 |
| |
| 作者单位： | (1)华南师范大学传输光学实验室,广州510631; (2)华南师范大学量子电子学研究所,广州510631 |
| |
| 基金项目： | 高等学校骨干教师资助计划;广东省自然科学基金 (批准号 :0 114 5 5 );国家自然科学基金 (批准号 196 740 15 );广东省“千百十工程”优秀人才培养基金资助的课题~~ |
| |
| 摘 要： | 对自散焦介质中由交叉相位调制效应引发的光束聚焦过程进行了细致的系统研究,讨论了抽运光初始振幅、抽运光信号光初始间距和抽运光信号光波长比三个参量对信号光聚焦过程的影响.数值模拟结果表明:抽运光越强,信号光聚焦程度越大;抽运光信号光初始间距和抽运光信号光波长比均存在一个最佳值,使得光束聚焦达到最佳效果.通过参数最佳值的选择,可提高光束聚焦的效率关键词：非线性折射率系数交叉相位调制效应自散焦介质光束聚焦
|
| 关 键 词： | 非线性折射率系数 交叉相位调制效应 自散焦介质 光束聚焦 |
| 收稿时间： | 2001-08-17 |
| 修稿时间： | 2001-08-17 |
Optimum parameters for focusing of optical beams in self|defocusing nonlinear media |
| |
| Guo Qi,Tian Ye and Liu Cheng-Yi. Optimum parameters for focusing of optical beams in self|defocusing nonlinear media[J]. Acta Physica Sinica, 2002, 51(5): 1057-1062 |
| |
| Authors: | Guo Qi Tian Ye Liu Cheng-Yi |
| |
| Abstract: | In this paper, a thorough discussion is given about the focusing of optical beams due to the cross|phase modulation in self|defocusing nonlinear media.We discuss the effect on the focusing of the signal beams for the three initial parameters:the amplitude of the pump beam,the separation between the pump and the signal beam centers,and the wavelength ratio of the two beams.Our numerical results show that two of the three parameters (separation between the two beam centers and the wavelength ratio of the two beams) have optimum values,respectively,which result in the strongest focusing of the signal beam.Our results can be used to design experiments to obtain the best results of focusing. |
| |
| Keywords: | nonlinear refractive coefficient cross|phase modulation effect self|defocusing medium focusing of optical beams |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《物理学报》浏览原始摘要信息 |
|
点击此处可从《物理学报》下载免费的PDF全文 |
