| 小尺度自聚焦理论的非傍轴修正 |
| |
| 引用本文： | 郑一周,胡巍,陆大全,杨振军.小尺度自聚焦理论的非傍轴修正[J].光子学报,2003,32(11):1329-1331. |
| |
| 作者姓名： | 郑一周 胡巍 陆大全 杨振军 |
| |
| 作者单位： | 华南师范大学传输光学实验室,广州,510631 |
| |
| 基金项目： | 国家自然科学基金项目 (No .6 0 2 780 1 3)，教育部霍英东教育基金会 (No .81 0 5 8)，广东省自然科学基金团队项目
(No .2 0 0 0 30 6 1 )，国家高技术研究发展计划专项经费部分资助项目 |
| |
| 摘 要： | 从原始的非傍轴传输方程出发,研究了光束的非傍轴效应对小尺度自聚焦现象的影响结果是,非傍轴效应对不稳定区间的截止频率没有影响,但使最快增长频率增大,最大增长率减小同时,由于非傍轴的影响出现了一个新的增益区间,在该区间里,增益远远大于在原区间里的增益,但是,随着背景光强的增大,增益迅速减小.
|
| 关 键 词： | 小尺度自聚焦 非傍轴 |
| 收稿时间： | 2002/12/25 |
| 修稿时间： | 2002年12月25 |
A Non-paraxial Correction to the Small-scale Self-focusing Theory |
| |
| Zheng Yizhou,Hu Wei,Lu Daquan,Yang Zhenjun Laboratory of Light Transmission Optics,South China Normal University,Guangzhou ,China.A Non-paraxial Correction to the Small-scale Self-focusing Theory[J].Acta Photonica Sinica,2003,32(11):1329-1331. |
| |
| Authors: | Zheng Yizhou Hu Wei Lu Daquan Yang Zhenjun Laboratory of Light Transmission Optics South China Normal University Guangzhou China |
| |
| Institution: | Zheng Yizhou,Hu Wei,Lu Daquan,Yang Zhenjun Laboratory of Light Transmission Optics,South China Normal University,Guangzhou 510631,China |
| |
| Abstract: | On the basis of the linear stability theory, the non-paraxial nonlinear Schrdinger equation is used to study the small-scale self-focusing of intense laser beams. With a comparison of the gain spectrum obtained with paraxial and non paraxial equations, it shows that non paraxiality makes no influence on the cutoff frequency, but increases the fastest growing frequency and reduces the maximum gain of the perturbation. And a new region where the small-scale self-focusing occurs is found due to the non-paraxiality. Some discussions are given on this new region around the small-scale self-focusing. |
| |
| Keywords: | Small scale self focusing Non paraxiality |
| 本文献已被 CNKI 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 |
|
