Journal ArticleDOI
Orbital angular momentum holography for high-security encryption
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TLDR
In this article, the orbital angular momentum (OAM) of light has been implemented as an information carrier for holography due to the lack of helical mode index selectivity in the Bragg diffraction formula.Abstract:
Holography has been identified as a vital platform for three-dimensional displays, optical encryption, microscopy and artificial intelligence through different physical dimensions. However, unlike the wavelength and polarization divisions, orbital angular momentum (OAM) of light, despite its helical wavefront being an independent physical dimension, has not been implemented as an information carrier for holography due to the lack of helical mode index selectivity in the Bragg diffraction formula. Here, we demonstrate OAM holography by discovering strong OAM selectivity in the spatial-frequency domain without a theoretical helical mode index limit. As such, OAM holography allows the multiplexing of a wide range of OAM-dependent holographic images with a helical mode index spanning from −50 to 50, leading to a 10 bit OAM-encoded hologram for high-security optical encryption. Our results showing up to 210 OAM-dependent distinctive holographic images mark a new path to achieving ultrahigh-capacity holographic information systems harnessing the previously inaccessible OAM division. The orbital angular momentum degree of freedom is used to demonstrate 10 bit holographic images with a helical mode index spanning from −50 to 50.read more
Citations
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Journal ArticleDOI
Complex-amplitude metasurface-based orbital angular momentum holography in momentum space.
Haoran Ren,Xinyuan Fang,Jaehyuck Jang,Johannes Bürger,Junsuk Rho,Stefan A. Maier,Stefan A. Maier +6 more
TL;DR: An orbitalangular momentum holography technology that is capable of multiplexing up to 200 independent orbital angular momentum channels and can be three-dimensionally printed in a polymer matrix on SiO2 for large-area fabrication is demonstrated.
Journal ArticleDOI
High-security-level multi-dimensional optical storage medium: nanostructured glass embedded with LiGa 5 O 8 : Mn 2+ with photostimulated luminescence.
Shisheng Lin,Hang Lin,Chong-Geng Ma,Yao Cheng,Sizhe Ye,Fulin Lin,Renfu Li,Ju Xu,Yuansheng Wang +8 more
TL;DR: A brand new optical storage medium, transparent glass ceramic embedded with photostimulated LiGa5O8: Mn2+ nanocrystals, capable of achieving bit-by-bit optical data write-in and read-out in a photon trapping/detrapping mode, is developed.
Journal ArticleDOI
Spin-decoupled metasurface for simultaneous detection of spin and orbital angular momenta via momentum transformation.
Yinghui Guo,Shicong Zhang,Mingbo Pu,Qiong He,Jinjin Jin,Mingfeng Xu,Yaxin Zhang,Ping Gao,Xiangang Luo +8 more
TL;DR: In this article, a single azimuthal-quadratic phase metasurface-based photonic momentum transformation (PMT) is illustrated and utilized for vortex recognition.
Journal ArticleDOI
Reprogrammable meta-hologram for optical encryption.
Geyang Qu,Wenhong Yang,Qinghai Song,Qinghai Song,Yilin Liu,Cheng-Wei Qiu,Jiecai Han,Din Ping Tsai,Shumin Xiao,Shumin Xiao +9 more
TL;DR: A re-programmable metasurface that can produce arbitrary holographic images for optical encryption and decrypted and it is hoped that this work paves a more promising way to optical information encryption and authentication.
Journal ArticleDOI
Recent advances in multi-dimensional metasurfaces holographic technologies
TL;DR: In this paper, the authors classify the metasurface holography into several categories such as phase-only, amplitude-only and complex-amplitude holographies.
References
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Journal ArticleDOI
Terabit free-space data transmission employing orbital angular momentum multiplexing
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