Meta-holograms based on evanescent waves for encryption

Guo, Xinfeng; Zhang, Xiaohu; Guo, Yinghui; Pu, Mingbo; Ma, Xiaoliang; Li, Xiong; Luo, Xiangang

doi:10.1039/c7ra09626g

Cited by 2 publications

(1 citation statement)

References 35 publications

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“…The QWP 1 and LP 1 are applied to filter out RCP light in the transmission space, and QWP 2 and LP 2 are utilized to filter out LCP light in the reflect space. Note that the experimental setup of the off‐axis illumination is more complicated than that with normal incidence, which can be relieved by using the grating‐multilayer structure …”

Section: Design and Characterization Of The Colorful Metahologram Witmentioning

confidence: 92%

Colorful Metahologram with Independently Controlled Images in Transmission and Reflection Spaces

Zhang

Guo

et al. 2019

Adv Funct Materials

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Benefiting from the excellent properties of manipulating electromagnetic waves at subwavelength scale, metasurfaces are widely used to realize metaholograms with a large viewing angle or diffraction angle. However, all previously reported holograms just utilize transmission (or reflection) space while the corresponding reflection (or transmission) space is abandoned. In this paper, combining the off-axis illumination method and polarization dependence of geometric-phase-based metasurfaces, a scheme is proposed to realize colorful metaholograms with independently controlled holographic images in both the transmission and reflection spaces. With this method, the usable data capacity and imaging region are greatly expanded. As far as it is known, it is the first time that independently controlled color holographic images in both the transmission and reflection spaces using metasurfaces is demonstrated. This approach has promising applications in real 360° holographic image, multifunctional optical device, multicolor display, etc.

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Section: Design and Characterization Of The Colorful Metahologram Witmentioning

confidence: 92%

Colorful Metahologram with Independently Controlled Images in Transmission and Reflection Spaces

Zhang

Guo

et al. 2019

Adv Funct Materials

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View full text Add to dashboard Cite

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Surface plasmon resonance based optimization of irradiation doses and alginate content on radiosynthesis of silver nanoparticles

Perkasa,

Arozal,

Cholil

et al. 2024

International Conference on Nuclear Science, Technology, and Applications – Iconsta 2022

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Meta-holograms based on evanescent waves for encryption

Abstract: A type of meta-hologram based on evanescent wave illumination and a metasurface is proposed.

Cited by 2 publications

References 35 publications

Colorful Metahologram with Independently Controlled Images in Transmission and Reflection Spaces

Colorful Metahologram with Independently Controlled Images in Transmission and Reflection Spaces

Surface plasmon resonance based optimization of irradiation doses and alginate content on radiosynthesis of silver nanoparticles

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