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首页> 外文会议>NATO Advanced Study Institute on Soliton-driven Photonics Sep 24-Oct 4, 2000 Swinoujscie, Poland >PHOTOREFRACTIVE SOLITONS THROUGH SECOND -HARMONIC GENERATION
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PHOTOREFRACTIVE SOLITONS THROUGH SECOND -HARMONIC GENERATION

机译：通过二次产生的光折变孤子

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摘要

In the past decade spatial solitary waves in materials exhibiting non-Kerr nonlinearities have attracted a lot of attention. The dynamics of solitons in quadratic media was investigated both theoretically and experimentally. Solitons in photorefractive crystals have also been observed and investigated. In this paper, optical solitons in materials exhibiting both photorefractive and quadratic nonlinearity are investigated. These two nonlinearities are of completely different origin but as shown, in a recent, pioneering paper, they can both influence the propagation of a beam of light ( it is shown that the efficiency of second harmonic generation increases due to creation of a photorefractive channel). Here we show that relatively weak second-harmonic wave, can guide a powerful fundamental wave. Modulation instability analysis is performed and also solitary wave solutions are found.
机译：在过去的十年中，表现出非Ker非线性的材料中的空间孤立波引起了很多关注。理论和实验研究了二次介质中孤子的动力学。还已经观察和研究了光折变晶体中的孤子。在本文中，研究了同时显示光折射和二次非线性的材料中的光学孤子。这两个非线性有完全不同的起源，但是如最近的一篇开创性论文所示，它们都可以影响光束的传播（已表明，由于创建了光折射通道，二次谐波的产生效率会提高） 。在这里，我们表明相对较弱的二次谐波可以引导强大的基波。进行调制不稳定性分析，并且找到孤立波解。

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