Nonlinear frequency conversion is the important method to get coherent radiation in all-optical waveband. The intentional manipulation of nonlinear harmonic wave, which has some special phase, amplitude, polarization, and so on, is also important to realize all kinds of optical micro-manipulation, optical micro-fabrication, and optical communication in all-optical waveband. There are three methods to manipulate such nonlinear harmonic wave, which are tailoring the functional facet, the structure of crystals, and the structure of the incident light. In this review, we will systematically introduce the fundamental principle and latest advances in this field and summarize the respective characteristics of these three methods.

中文翻译：

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结构材料和结构光对二阶非线性谐波的操纵

非线性频率转换是获得全光波段相干辐射的重要方法。对具有特殊相位、幅值、偏振等特性的非线性谐波进行有意操纵，对于实现全光波段的各种光学微加工、光学微加工和光通信也具有重要意义。操纵这种非线性谐波的方法有三种，分别是功能面、晶体结构和入射光结构。在这篇综述中，我们将系统地介绍该领域的基本原理和最新进展，并总结这三种方法各自的特点。