4.7 Article

Optical encryption in spatial frequencies of light fields with metasurfaces

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Photonic Encryption Platform via Dual-Band Vectorial Metaholograms in the Ultraviolet and Visible

Joohoon Kim et al.

Summary: This research proposes a dual-band vectorial metahologram for optical encryption in the visible and ultraviolet (UV) regimes. By encoding nine holographic images for different polarization states using a pixelated metasurface, independent holograms can be observed under UV laser and visible laser illumination. This dual-band vectorial hologram device has the potential to be applied in various high-security and anticounterfeiting applications.

ACS NANO (2022)

Article Optics

Image encryption using spatial nonlinear optics

Junfeng Hou et al.

Summary: Optical technologies have been widely used in information security, but the linearity issue in current optical encryption techniques makes the system vulnerable to attacks. Recent research shows that a true nonlinear optical encryption technique can be achieved by utilizing the self-phase modulation effect of photorefractive crystals, providing robustness against known plaintext attacks.

ELIGHT (2022)

Article Nanoscience & Nanotechnology

Near-zero reflection of all-dielectric structural coloration enabling polarization-sensitive optical encryption with enhanced switchability

Chunghwan Jung et al.

Summary: The study introduces a fully switchable structural coloration technique that can display and hide images by controlling the polarization of incident light, achieving near-zero scattering when colors are turned-off. The metasurfaces are composed of triple-nanofin structures, which can cover the full color spectrum and have potential applications in various fields.

NANOPHOTONICS (2021)

Article Chemistry, Multidisciplinary

Polarization and Holography Recording in Real- and k-Space Based on Dielectric Metasurface

Ruizhe Zhao et al.

Summary: The birefringent dielectric metasurface demonstrates the encoding of a grayscale image in real-space and the reconstruction of a vectorial holographic image in k-space, enhancing the information capability and security level through polarization manipulation and phase modulation simultaneously.

ADVANCED FUNCTIONAL MATERIALS (2021)

Article Multidisciplinary Sciences

Optical secret sharing with cascaded metasurface holography

Philip Georgi et al.

Summary: This study demonstrates a novel secret sharing scheme based on metasurface holography, utilizing holographic images for splitting and reconstructing encrypted information, achieving high fidelity secret extraction.

SCIENCE ADVANCES (2021)

Review Chemistry, Multidisciplinary

Metasurface-Driven Optically Variable Devices

Chunghwan Jung et al.

Summary: Traditional OVDs face risks in the face of increasing counterfeit threats; Metasurfaces, as candidates for the new generation of OVDs, exhibit multiple optical responses and provide a more robust solution for optical anti-counterfeiting; mOVDs have multiple optical responses, are difficult to reverse engineer, and are key points of discussion in terms of fabrication methods and classification.

CHEMICAL REVIEWS (2021)

Article Multidisciplinary Sciences

Pixelated bifunctional metasurface-driven dynamic vectorial holographic color prints for photonic security platform

Inki Kim et al.

Summary: The authors introduced a bi-functional metasurface that combines structural color printing and polarization encoded vectorial holography, showcasing an electrically tunable optical security platform for advanced encryption applications. This metasurface offers versatile polarization control with eight channels, where structural color prints are observed under white light and polarization encoded holograms are reconstructed under laser illumination. A proof-of-concept electrically tunable optical security platform, doubly encrypted for security and anticounterfeiting applications, is developed incorporating liquid crystals.

NATURE COMMUNICATIONS (2021)

Article Materials Science, Multidisciplinary

Dual-Band Operating Metaholograms with Heterogeneous Meta-Atoms in the Visible and Near-Infrared

Inki Kim et al.

Summary: Metasurfaces consisting of sub-wavelength structures have been researched as an alternative ultra-thin platform for flat optical devices, with one promising application being in multifunctional metaholograms for anticounterfeit purposes. By extending the operating wavelength band of conventional meta-holographic optics, it is possible to realize a security-enhanced anticounterfeit technology.

ADVANCED OPTICAL MATERIALS (2021)

Editorial Material Optics

Unlocking the future of optical security with metasurfaces

Jaehyuck Jang et al.

Summary: The multiple degrees of freedom of light, including amplitude, phase, polarization, and orbital angular momentum, make it an excellent candidate for optical security and encryption. By utilizing the unique characteristics of metasurfaces, exciting new optical security platforms have been demonstrated.

LIGHT-SCIENCE & APPLICATIONS (2021)

Article Optics

Laplace metasurfaces for optical analog computing based on quasi-bound states in the continuum

Danping Pan et al.

Summary: This study introduces a Laplace metasurface capable of performing Laplace operation on light field patterns, achieving high resolution and nearly perfect isotropic second-order differentiation. Numerical validation confirms the effectiveness of the Laplace metasurface, and demonstrates its application in image processing.

PHOTONICS RESEARCH (2021)

Article Multidisciplinary Sciences

Metasurface-based key for computational imaging encryption

Peixia Zheng et al.

Summary: The research proposes an optical encryption scheme by introducing metasurface-images (meta-images) into the encoding and decoding processes of SPI encryption as the keys. This approach eliminates the conventional digital transmission process of keys in SPI encryption, enabling the reusability of a single metasurface in different encryption processes. It paves the way toward high-security optical encryption between direct and indirect imaging methods.

SCIENCE ADVANCES (2021)

Article Nanoscience & Nanotechnology

Near-zero reflection of all-dielectric structural coloration enabling polarization-sensitive optical encryption with enhanced switchability

Chunghwan Jung et al.

Summary: Structural coloration using metasurfaces has been researched to improve the limitations of conventional color printing, achieving higher resolution, lower toxicity, and increased durability. A switchable structural coloration with polarization-sensitive metasurfaces enables full-colored images to be displayed and hidden, with near-zero scattering when colors are turned-off.

NANOPHOTONICS (2021)

Article Chemistry, Multidisciplinary

Multifunctional Dielectric Metasurfaces Consisting of Color Holograms Encoded into Color Printed Images

Dandan Wen et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

Article Chemistry, Multidisciplinary

Multiplexed Anticounterfeiting Meta-image Displays with Single-Sized Nanostructures

Deng Juan et al.

NANO LETTERS (2020)

Article Optics

Orbital angular momentum holography for high-security encryption

Xinyuan Fang et al.

NATURE PHOTONICS (2020)

Article Materials Science, Multidisciplinary

Integrated Metasurfaces with Microprints and Helicity-Multiplexed Holograms for Real-Time Optical Encryption

Xuhao Luo et al.

ADVANCED OPTICAL MATERIALS (2020)

Article Optics

Malus-metasurface-assisted polarization multiplexing

Liangui Deng et al.

LIGHT-SCIENCE & APPLICATIONS (2020)

Article Chemistry, Multidisciplinary

Nonlinear Diatomic Metasurface for Real and Fourier Space Image Encoding

Ningbin Mao et al.

NANO LETTERS (2020)

Article Multidisciplinary Sciences

Reprogrammable meta-hologram for optical encryption

Geyang Qu et al.

NATURE COMMUNICATIONS (2020)

Review Optics

Electromagnetic metasurfaces: physics and applications

Shulin Sun et al.

ADVANCES IN OPTICS AND PHOTONICS (2019)

Article Physics, Applied

Nonlinear Vectorial Metasurface for Optical Encryption

Yutao Tang et al.

PHYSICAL REVIEW APPLIED (2019)

Article Optics

Perturbative countersurveillance metaoptics with compound nanosieves

Jiancai Xue et al.

LIGHT-SCIENCE & APPLICATIONS (2019)

Article Multidisciplinary Sciences

Holographic colour prints for enhanced optical security by combined phase and amplitude control

Kevin T. P. Lim et al.

NATURE COMMUNICATIONS (2019)

Article Multidisciplinary Sciences

Addressable metasurfaces for dynamic holography and optical information encryption

Jianxiong Li et al.

SCIENCE ADVANCES (2018)

Article Multidisciplinary Sciences

All-optical machine learning using diffractive deep neural networks

Xing Lin et al.

SCIENCE (2018)

Article Optics

Multichannel vectorial holographic display and encryption

Ruizhe Zhao et al.

LIGHT-SCIENCE & APPLICATIONS (2018)

Article Optics

Optical security and authentication using nanoscale and thin-film structures

Artur Carnicer et al.

ADVANCES IN OPTICS AND PHOTONICS (2017)

Article Chemistry, Multidisciplinary

Plasmonic Color Filters as Dual-State Nanopixels for High-Density Microimage Encoding

Esmaeil Heydari et al.

ADVANCED FUNCTIONAL MATERIALS (2017)

Review Physics, Multidisciplinary

A review of metasurfaces: physics and applications

Hou-Tong Chen et al.

REPORTS ON PROGRESS IN PHYSICS (2016)

Article Optics

Roadmap on optical security

Bahram Javidi et al.

JOURNAL OF OPTICS (2016)

Article Multidisciplinary Sciences

Spin and wavelength multiplexed nonlinear metasurface holography

Weimin Ye et al.

NATURE COMMUNICATIONS (2016)

Article Chemistry, Multidisciplinary

Broadband Hybrid Holographic Multiplexing with Geometric Metasurfaces

Lingling Huang et al.

ADVANCED MATERIALS (2015)

Review Physics, Multidisciplinary

Holographic optical metasurfaces: a review of current progress

Patrice Genevet et al.

REPORTS ON PROGRESS IN PHYSICS (2015)

Article Multidisciplinary Sciences

Helicity multiplexed broadband metasurface holograms

Dandan Wen et al.

NATURE COMMUNICATIONS (2015)

Article Multidisciplinary Sciences

Performing Mathematical Operations with Metamaterials

Alexandre Silva et al.

SCIENCE (2014)

Article Multidisciplinary Sciences

Three-dimensional plasmonic stereoscopic prints in full colour

Xiao Ming Goh et al.

NATURE COMMUNICATIONS (2014)

Article Optics

Advances in optical security systems

Wen Chen et al.

ADVANCES IN OPTICS AND PHOTONICS (2014)

Review Multidisciplinary Sciences

Planar Photonics with Metasurfaces

Alexander V. Kildishev et al.

SCIENCE (2013)

Article Multidisciplinary Sciences

Three-dimensional optical holography using a plasmonic metasurface

Lingling Huang et al.

NATURE COMMUNICATIONS (2013)

Article Optics

Why future supercomputing requires optics

H. John Caulfield et al.

Nature Photonics (2010)

Article Engineering, Electrical & Electronic

Reversible data hiding

ZC Ni et al.

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY (2006)