Dielectric metasurfaces have been widely developed as ultra-compact photonic elements based on which prominent miniaturized devices of general interest, such as spectrometers, achromatic lens, and polarization cameras, have been implemented. With metasurface applications taking off, realizing versatile manipulation of light waves is becoming crucial. Here, by detailedly analyzing the light wave modulation principles raising from an individual meta-atom, we discuss the minimalist design strategy of dielectric metasurfaces for multi-dimensionally manipulating light waves, including parameter and spatial dimensions. As proof-of-concepts, those on-demand manipulations in different dimensions and their application potentials are exemplified by metasurfaces composed of polycrystalline silicon rectangle nanopillars. This framework provides basic guidelines for the flexible design of functionalized metasurfaces and the expansion of their applications as well as implementation approaches of more abundant light wave manipulations and applications using hybrid structures.

中文翻译：

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由单层介电超表面实现的按需光波操纵

介电超表面已被广泛开发为超紧凑光子元件，基于该元件已经实现了普遍感兴趣的突出小型化设备，例如光谱仪、消色差透镜和偏振相机。随着超表面应用的兴起，实现对光波的多功能操纵变得至关重要。在这里，通过详细分析从单个超原子产生的光波调制原理，我们讨论了用于多维操纵光波的介电超表面的极简设计策略，包括参数和空间维度。作为概念验证，不同维度的按需操作及其应用潜力以由多晶硅矩形纳米柱组成的超表面为例。