Nonlinear optical memory effect.
Nonlinear optical memory effect.
复制标题
非线性光学记忆效应。
作者：
A. Fleming;Claudio Conti;T. Vettenburg;A. Falco
通过随机介质传播的光会产生特征散斑图案，与大量散射事件直接相关。这些复杂的动力学显着地表现出对入射光参数扰动的鲁棒性，保持了散射波前的相关性。这种行为被称为光学记忆效应。在这里，我们揭示了非线性光学记忆效应的特性，当光热非线性扰乱随机材料时就会发生这种效应。通过在可见光范围内对二氧化硅气凝胶进行一系列泵浦和探针实验来表征该效应。这种额外的自由度进一步推广了记忆效应，为基于随机介质非线性响应的应用开辟了道路。
Light propagating through random media produces characteristic speckle patterns, directly related to the large multitude of scattering events. These complex dynamics remarkably display robustness to perturbation of the incoming light parameters, maintaining correlation in the scattered wavefront. This behavior is known as the optical memory effect. Here we unveil the properties of the nonlinear optical memory effect, which occurs when an optothermal nonlinearity perturbs the random material. The effect is characterized through a series of pump and probe experiments in silica aerogel, in the visible range. This additional degree of freedom further generalizes the memory effect, opening the road to applications based on the nonlinear response of random media.
强散射 GaP 纳米线中光的超快相移。
影响因子：
8.6
作者：
Abb M
通讯作者：
Abb M
影响因子：
3.8
作者：
Gentilini, S.;Ghajeri, F.;Conti, C.
通讯作者：
Conti, C.