Yan Jingxiao, Wang Yongtian, Liu Yin, Wei Qunshuo, Zhang Xue, Li Xin, Huang Lingling
Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China.
Nanophotonics. 2022 May 30;11(13):3071-3080. doi: 10.1515/nanoph-2022-0103. eCollection 2022 Jun.
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.
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。具有亚波长单元结构和紧凑尺寸的超表面可作为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构成的超表面的单像素成像方案，其中通过移位实现空间调制。这种移位模式展示了空间复用能力，它可以在有限空间内获得更多图案并大大增加掩膜容量。受益于光子筛的简单结构和易于制造，可制造出大容量超表面。同时，超表面可以简化单像素成像系统，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方案可以在从整个可见光到近红外光的范围内工作。这种方案为单像素成像提供了一种新方法，并将应用于微观成像、动态成像、高光谱成像等领域。
