• Chinese Optics Letters
  • Vol. 20, Issue 5, 053602 (2022)
Samia Osman Hamid Mohammed1, Dong Zhao1, Syed Yasir Azeem1, Xiaoming Goh2, Shawn J. Tan2, Jinghua Teng2、**, and Kun Huang1、*
Author Affiliations
  • 1Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
  • 2Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Singapore 138634, Singapore
  • show less
    DOI: 10.3788/COL202220.053602 Cite this Article
    Samia Osman Hamid Mohammed, Dong Zhao, Syed Yasir Azeem, Xiaoming Goh, Shawn J. Tan, Jinghua Teng, Kun Huang. Efficiency-enhanced reflective nanosieve holograms[J]. Chinese Optics Letters, 2022, 20(5): 053602 Copy Citation Text show less

    Abstract

    Photon nanosieves, as amplitude-type metasurfaces, have been demonstrated usually in a transmission mode for optical super-focusing, display, and holography, but the sieves with subwavelength size constrain optical transmission, thus leading to low efficiency. Here, we report reflective photon nanosieves that consist of metallic meta-mirrors sitting on a transparent quartz substrate. Upon illumination, these meta-mirrors offer the reflectance of 50%, which is higher than the transmission of visible light through diameter-identical nanoholes. Benefiting from this configuration, a meta-mirror-based reflective hologram has been demonstrated with good consistence between theoretical and experimental results over the broadband spectrum from 500 nm to 650 nm, meanwhile exhibiting total efficiency of 7%. Additionally, if an additional high-reflectance layer is employed below these meta-mirrors, the efficiency can be enhanced further for optical anti-counterfeiting.
    Copy Citation Text
    Samia Osman Hamid Mohammed, Dong Zhao, Syed Yasir Azeem, Xiaoming Goh, Shawn J. Tan, Jinghua Teng, Kun Huang. Efficiency-enhanced reflective nanosieve holograms[J]. Chinese Optics Letters, 2022, 20(5): 053602
    Download Citation