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arXiv 1404.0937physics.optics
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三维光弹共振辐射中的极端事件

Extreme Events in Resonant Radiation from Three-dimensional Light Bullets

Thomas Roger, Donatas Majus, Gintaras Tamosauskas, Paris Panagiotopoulos, Miroslav Kolesik, Goery Genty, Audrius Dubietis, Daniele Faccio

摘要:

我们报告的测量显示极端事件的统计共振辐射发射的时空光子弹。我们追溯这些极端事件的起源回到不稳定性,导致陡峭的梯度的时间轮廓的强光子弹,发生在初始的崩溃动态。数值模拟再现的共振辐射的极端值的统计被发现是内在地联系到同时发生的时间和空间的自聚焦动力学。输入能量和空间相位曲率的小波动解释了观察到的极端行为。

英文摘要:

We report measurements that show extreme events in the statistics of resonant radiation emitted from spatiotemporal light bullets. We trace the origin of these extreme events back to instabilities leading to steep gradients in the temporal profile of the intense light bullet that occur during the initial collapse dynamics. Numerical simulations reproduce the extreme valued statistics of the resonant radiation which are found to be intrinsically linked to the simultaneous occurrence of both temporal and spatial self-focusing dynamics. Small fluctuations in both the input energy and in the spatial phase curvature explain the observed extreme behaviour.

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