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arXiv 1602.01722physics.opticsnlin.PS
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高度非局域介质中的呼吸孤子

Breather solitons in highly nonlocal media

Alessandro Alberucci, Chandroth P. Jisha, Gaetano Assanto

摘要:

我们研究了高度非局域介质中光学空间孤立子的呼吸。推广的埃克塞特定理,我们证明,在光束宽度的振荡服从一个四阶常微分方程。此外,在实际高度非局域材料中,Snyder和Mitchell [Science \textbf{276},1538(1997)]的原始可访问孤子模型不能准确地描述自约束光束的动力学,因为横向尺寸振荡具有不仅取决于功率而且取决于初始宽度的周期。模拟的非线性响应的泊松方程驱动的光束强度,我们验证了理论结果与数值模拟。

英文摘要:

We investigate the breathing of optical spatial solitons in highly nonlocal media. Generalizing the Ehrenfest theorem, we demonstrate that oscillations in beam width obey a fourth-order ordinary differential equation. Moreover, in actual highly nonlocal materials, the original accessible soliton model by Snyder and Mitchell [Science \textbf{276}, 1538 (1997)] cannot accurately describe the dynamics of self-confined beams as the transverse size oscillations have a period which not only depends on power but also on the initial width. Modeling the nonlinear response by a Poisson equation driven by the beam intensity we verify the theoretical results against numerical simulations.

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