Results 21 to 30 of about 32,542 (282)

Computing 3D Phase-Type Holograms Based on Deep Learning Method

open access: yesPhotonics, 2021
Computer holography is a technology that use a mathematical model of optical holography to generate digital holograms. It has wide and promising applications in various areas, especially holographic display.
Huadong Zheng   +3 more
doaj   +1 more source

Electric-field multiplexing/demultiplexing of volume holograms in photorefractive media [PDF]

open access: yes, 1993
We propose a new method of volume hologram multiplexing/demultiplexing in noncentrosymmetric media. Volume holograms may be multiplexed by tuning the material parameters of the recording medium (such as refractive index or lattice parameters) while ...
Kewitsch, Anthony S.   +3 more
core   +1 more source

Surface Susceptibility Synthesis of Metasurface Holograms for Creating Electromagnetic Illusions

open access: yesIEEE Access, 2020
A systematic approach is presented to exploit the rich field transformation capabilities of Electromagnetic (EM) metasurfaces for creating a variety of illusions using the concept of metasurface holograms.
Tom J. Smy   +2 more
doaj   +1 more source

Broadband spin-multiplexed single-celled metasurface holograms: a comprehensive comparison between different strategies

open access: yesNanophotonics, 2023
Metasurface-generated holograms have emerged as a unique platform for arbitrarily shaping the reflected/transmitted wavefronts with the advantages of subwavelength large pixel sizes and multiple information channels.
im Sande Sören   +2 more
doaj   +1 more source

Waveguide holograms: A new approach to hologram integration

open access: yesOptics Communications, 1976
Abstract A new class of holography is proposed, in which (1) the evanescent part of a guided wave, or (2) the guided wave in a thin-film hologram is utilized as the reference wave and/or the illuminating one. The hologram was designated as “wave-guide hologram” and has advantages in the possibility of integration, wide field of view, and compactness ...
Toshiaki SUHARA   +2 more
openaire   +2 more sources

Metameric Varifocal Holograms

open access: yes2022 IEEE Conference on Virtual Reality and 3D User Interfaces (VR), 2022
UK Research & Innovation (UKRI); Engineering & Physical Sciences Research Council (EPSRC); Royal Society of ...
David R. Walton   +8 more
openaire   +2 more sources

Deep learning-based incoherent holographic camera enabling acquisition of real-world holograms for holographic streaming system

open access: yesNature Communications, 2023
While recent research has shown that holographic displays can represent photorealistic 3D holograms in real time, the difficulty in acquiring high-quality real-world holograms has limited the realization of holographic streaming systems.
Hyeonseung Yu   +10 more
doaj   +1 more source

Information multiplexing from optical holography to multi-channel metaholography

open access: yesNanophotonics, 2023
Holography offers a vital platform for optical information storage and processing, which has a profound impact on many photonic applications, including 3D displays, LiDAR, optical encryption, and artificial intelligence.
Márquez Andrés   +4 more
doaj   +1 more source

Experimental characterization of an angle-multiplexed holographic memory [PDF]

open access: yes, 1995
We demonstrate a simple angle-multiplexing holographic storage system, using a single acousto-optic deflector to achieve fast random access to the stored holograms.
An, Xin, Psaltis, Demetri
core   +1 more source

The Silent Researcher Critique: A New Method for Obtaining a Critical Response to a Holographic Artwork

open access: yesArts, 2019
The purpose of this article is to provide a plausible answer as to whether the Z-axis of holographic space can be used to depict a chronological narrative with an affective impact.
Pearl John
doaj   +1 more source

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