Efficiency-enhanced reflective nanosieve holograms

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Efficiency-enhanced reflective nanosieve holograms
Efficiency-enhanced reflective nanosieve holograms
Other Titles:
Chinese Optics Letters
Publication Date:
25 March 2022
Mohammed, S. O. H., Zhao, D., Azeem, S. Y., Goh, X., Tan, S. J., Teng, J., & Huang, K. (2022). Efficiency-enhanced reflective nanosieve holograms. Chinese Optics Letters, 20(5), 053602. https://doi.org/10.3788/col202220.053602
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 2~45 times 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 the 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. © 2021 Optical Society of America
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the A*STAR - AME Individual Research Grants
Grant Reference no. : A2083c0058

This research / project is supported by the A*STAR - Central Research Fund (CRF)
Grant Reference no. : N.A

National Natural Science Foundation of China (Grant No. 12134013 and 61875181), USTC Research Funds of the Double First-Class Initiative (Grant No. YD2030002003), “the Fundamental Research Funds for the Central Universities” in China, the CAS Poineer Hundred Talents Program. J.
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