| 厄米-高斯光束在饱和非线性介质中的传输特性 |
| |
| 引用本文： | 姜其畅,苏艳丽,聂合贤,马紫微,李永宏.厄米-高斯光束在饱和非线性介质中的传输特性[J].激光技术,2018,42(1):141-144. |
| |
| 作者姓名： | 姜其畅 苏艳丽 聂合贤 马紫微 李永宏 |
| |
| 作者单位： | 运城学院 物理与电子工程系, 运城 044000 |
| |
| 摘 要： | 为了研究厄米-高斯光束在光折变饱和非线性介质中的传输特性，采用有限差分方法数值求解了光波演化方程，理论分析了厄米-高斯光束的传输特性。结果表明，1维1阶、2阶和3阶厄米-高斯光束在光折变非线性介质中传输时，在合适的非线性条件下，均可以形成呼吸模式的孤子；随着非线性的加大，厄米-高斯光束的光场分量之间的相互分离趋势将逐渐变弱，同时，每个光场分量的振幅起伏效应会更加明显；改变厄米-高斯光束的入射位置、入射角度对其传输特性没有影响；2维厄米-高斯光束的传输特性和1维情况是类似的。厄米-高斯光束的这些特性在光开关领域有一定的应用前景。
|
| 关 键 词： | 非线性光学 厄米-高斯光束 光折变效应 空间孤子 |
| 收稿时间： | 2017-02-13 |
Propagation characteristics of Hermite-Gaussian beam in saturable nonlinear media |
| |
| Abstract: | In order to study propagation properties of Hermite-Gaussian beams in photorefractive saturable nonlinear media, finite difference method was used to solve the evolution equation of light wave numerically and analyze the propagation properties of Hermite-Gaussian beams theoretically. The results show that, under suitable nonlinear conditions, 1-D Hermite-Gaussian beams of 1-order, 2-order and 3-order can form the solitons in respiratory mode during the propagation in photorefractive nonlinear media. With the increase of nonlinearity, the separation tendency among light field components of Hermite-Gaussian beams would become weaker. At the same time, the amplitude fluctuation effect of each light field component would be more obvious. The changes of incident position and incident angle of Hermite-Gaussian beams have no influence on its propagation characteristics. The transmission characteristics of 2-D Hermite-Gaussian beams are similar to those of 1-D. These properties of Hermite-Gaussian beams have certain application prospects in the field of optical switching. |
| |
| Keywords: | |
|
| 点击此处可从《激光技术》浏览原始摘要信息 |
|
点击此处可从《激光技术》下载全文 |
|
