Single pixel imaging as an alternative to traditional imaging methods, has attracted extensive attention in various research fields. Metasurfaces with subwavelength unit cells and compact footprint can be used as a substitute for traditional optical elements. In this work, we propose a single pixel imaging scheme based on metasurface composed of photon sieves, where spatial modulation is realized through shifting. Spatial multiplexing capability is demonstrated by this shifting mode, which can obtain more patterns in limited space and greatly increase the mask capacity. Benefited from the simple structure and easy manufacture of photon sieves, large capacity metasurface can be manufactured. Meanwhile, metasurfaces can simplify the single pixel imaging system, leading to the system miniaturization and integration. In addition, numerical and optical experiments prove that our proposal can operate at the range from the entire visible light to near-infrared light. Such scheme provides a new way for single pixel imaging and would be applied in microscopic imaging, dynamic imaging, hyperspectral imaging, and so on.

中文翻译：

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基于大容量空间复用超表面的单像素成像

单像素成像作为传统成像方法的替代方案，在各个研究领域引起了广泛关注。具有亚波长晶胞和紧凑足迹的超表面可用作传统光学元件的替代品。在这项工作中，我们提出了一种基于由光子筛组成的超表面的单像素成像方案，其中空间调制是通过移位实现的。这种移位模式展示了空间复用能力，可以在有限的空间内获得更多的图案，大大增加掩膜容量。得益于光子筛结构简单、易于制造，可以制造大容量的超表面。同时，超表面可以简化单像素成像系统，从而实现系统的小型化和集成化。此外，数值和光学实验证明，我们的提议可以在从整个可见光到近红外光的范围内运行。该方案为单像素成像提供了一种新途径，将应用于显微成像、动态成像、高光谱成像等领域。