The nonlinear Talbot effect has sparked considerable interest of researchers since it was proposed in recent years because it has many advantages compared with the Talbot effect in linear optics. In previous researches, such a nonlinear Talbot effect is only observed in nonlinear photonic crystals, which cannot dynamically manipulate in real time. Here, we report and experimentally demonstrate the high efficiency and dynamic manipulation of such a nonlinear Talbot effect with structured light. Different from the previous scheme, the nonlinear self-imaging effect observed in our experiment originates from the spatial phase structure of the incident fundamental frequency light. In our experiments, integer and fractional second-harmonic Talbot self-imaging is observed. Our results not only extend a novel technique for dynamic manipulation of the nonlinear Talbot effects, but also may have potential applications in parallel optical lithography, optical imaging, and optical computing.

中文翻译：

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结构光对非线性Talbot效应的动态操纵

自从近年来提出以来，非线性Talbot效应就引起了研究人员的极大兴趣，因为与线性光学中的Talbot效应相比，它具有许多优势。在先前的研究中，仅在非线性光子晶体中观察到这种非线性Talbot效应，而该非线性光子晶体无法实时动态地操纵。在这里，我们报告并实验证明了这种非线性Talbot效应与结构光的高效结合和动态操纵。与先前的方案不同，在我们的实验中观察到的非线性自成像效应源自入射基频光的空间相位结构。在我们的实验中，观察到整数和分数次谐波Talbot自成像。