| 梯度折射率介质中高斯光束的非线性传输特性 |
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| 引用本文： | 文双春,范滇元.梯度折射率介质中高斯光束的非线性传输特性[J].强激光与粒子束,2000,12(6):657-660. |
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| 作者姓名： | 文双春 范滇元 |
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| 作者单位： | 中国科学院上海光学精密机械研究所，高功率激光物理国家实验室，上海800-211信箱 201800 |
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| 摘 要： | 利用无像差自聚焦理论研究了梯度折射率非线性Kerr介质中高斯光束的传输特性，得到了高斯光束光斑半径和波面曲率半径的表达式。解析结果清楚地表明了衍射、自聚焦以及梯度折射率效应之间的竞争对高斯光束传输行为的影响。梯度折射率效应使光束自聚焦的距离缩短。
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| 关 键 词： | 高斯光束 梯度折射率 自聚焦 非线性传输 |
| 收稿时间： | 1900-01-01; |
Nonlinear Propagation of Gaussian Beams in Graded-Index Media |
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| WEN Shuang-chun,FAN Dian-yuan.Nonlinear Propagation of Gaussian Beams in Graded-Index Media[J].High Power Laser and Particle Beams,2000,12(6):657-660. |
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| Authors: | WEN Shuang-chun FAN Dian-yuan |
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| Abstract: | The propagation property of Gaussian beam traveling through graded-index media with Kerr nonlinearity is investigated using the aberrationless theory of self-focusing. Expressions for the spot size and the beam radius of curvature of Gaussian beam are obtained. It is shown that the propagation property of Gaussian beams depends on the competition between the diffraction effect and the combined effect of nonlinearity and graded-index. The graded-index tends to shorten the self-focusing distance. |
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| Keywords: | graded-index self-focusing nonlinear propagation |
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