Spatial Rogue Waves in Photorefractive Ferroelectrics.
Spatial Rogue Waves in Photorefractive Ferroelectrics.
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DOI：
10.1103/physrevlett.115.093901
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发表时间：
2015-08
影响因子：
8.6
通讯作者：
D. Pierangeli;F. D. Mei;F. D. Mei;Claudio Conti;A. Agranat;E. DelRe
中科院分区：
文献类型：
--
作者：
D. Pierangeli;F. D. Mei;F. D. Mei;Claudio Conti;A. Agranat;E. DelRe
在光折变铁电晶体发生结构相变时，光在极端非线性区域中传播时会产生流氓波。透射的空间光分布包含非常大强度的明亮的局部斑点，其遵循签名长尾统计，该统计随着非线性减弱而消失。孤立波事件作为失平衡响应和无序形成，增强了临界点处的克尔饱和非线性。与单个观测到的细丝相关的自相似性和广义非线性薛定谔方程的数值模拟表明，孤子融合的动力学和尺度不变性在微观上可以在观测到的流氓强度和统计中发挥重要作用。
Rogue waves are observed as light propagates in the extreme nonlinear regime that occurs when a photorefractive ferroelectric crystal is undergoing a structural phase transition. The transmitted spatial light distribution contains bright localized spots of anomalously large intensity that follow a signature long-tail statistics that disappears as the nonlinearity is weakened. The isolated wave events form as out-of-equilibrium response and disorder enhance the Kerr-saturated nonlinearity at the critical point. Self-similarity associable to the individual observed filaments and numerical simulations of the generalized nonlinear Schrödinger equation suggests that dynamics of soliton fusions and scale invariance can microscopically play an important role in the observed rogue intensities and statistics.