| 高斯光束在对数型非线性介质中的传输特性 |
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| 引用本文： | 康俊,唐永林,李大义,陈建国,张科军.高斯光束在对数型非线性介质中的传输特性[J].激光技术,2000,24(2):118-122. |
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| 作者姓名： | 康俊 唐永林 李大义 陈建国 张科军 |
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| 作者单位： | 1.四川大学光电系, 成都, 610064 |
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| 摘 要： | 根据对数型非线性介质中高斯光束的束宽和波阵面曲率变化所满足的耦合方程,采用数值计算对高斯光束的传输特性进行了详细的分析。结合相图分析了高斯光束在不同初始条件下束宽与波阵面的变化情况。利用力学类比,讨论了高斯光束在传输过程中形成的对称呼吸模式与不对称呼吸模式的空间孤子。
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| 关 键 词： | 对数型非线性介质 高斯光束 空间孤子 呼吸模式 |
| 收稿时间： | 1999-02-04 |
| 修稿时间： | 1999-04-14 |
Propagating characteristics of Gaussian beam in logarithmically nonlinear media |
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| Kang Jun,Tang Yonglin,Li Dayi,Chen Jianguo,Zhang Kejun.Propagating characteristics of Gaussian beam in logarithmically nonlinear media[J].Laser Technology,2000,24(2):118-122. |
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| Authors: | Kang Jun Tang Yonglin Li Dayi Chen Jianguo Zhang Kejun |
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| Abstract: | Numerically solving equations governing the variations of the beam size and the curvature of wave front in the logarithmically nonlinear media (LNM), the propagating characteristics of Gaussian beams have been described in detail. With the aid of phase diagram, variations of parameters of Gaussian beams have been analyzed for different initial parameters. Using methods adopted in mechanics, the solitons of symmetrical breath mode and non symmetrical breath mode in propagation of Gaussian beams have been discussed. |
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| Keywords: | logarithmically nonlinear media Gaussian beam spatial solitons breath mode |
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