Results 1 to 10 of about 28,019 (252)

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.
Andres Marquez, Chi Li, A Beléndez
exaly   +2 more sources

Linear polarization holography

open access: yesOpto-Electronic Science, 2022
Polarization holography is a newly researched field, that has gained traction with the development of tensor theory. It primarily focuses on the interaction between polarization waves and photosensitive materials.
Xiaodi Tan, Peiliang Qi, Xianmiao Xu
exaly   +3 more sources

Incoherent Digital Holography: A Review

open access: yesApplied Sciences (Switzerland), 2018
Digital holography (DH) is a promising technique for modern three-dimensional (3D) imaging. Coherent holography records the complex amplitude of a 3D object holographically, giving speckle noise upon reconstruction and presenting a serious drawback ...
Jung-Ping Liu   +2 more
exaly   +3 more sources

Design of broadband terahertz vector and vortex beams: I. Review of materials and components

open access: yesLight: Advanced Manufacturing, 2022
In this paper, we review the existing approaches for vortex and vector beam shaping and generation in the terahertz frequency range. The particular focus of this review is on the possibility of homogeneous topological charge formation in the ultra-wide ...
Nikolay V. Petrov   +4 more
doaj   +1 more source

Design of broadband terahertz vector and vortex beams: II. Holographic assessment

open access: yesLight: Advanced Manufacturing, 2022
In this paper, we demonstrate the capabilities of the terahertz pulse time-domain holography in visualisation, simulation, and assessment of broadband THz vortex beam formation dynamics upon its shaping by elements of beam converter, and further ...
Nikolay V. Petrov   +4 more
doaj   +1 more source

Optimization of DMD-based independent amplitude and phase modulation by analysis of target complex wavefront

open access: yesScientific Reports, 2022
The paper presents the results of a comprehensive study on the optimization of independent amplitude and phase wavefront manipulation which is implemented using a binary digital micromirror device. The study aims to investigate the spatial resolution and
Alexandra Georgieva   +2 more
doaj   +1 more source

Compression Performance Analysis of Experimental Holographic Data Coding Systems

open access: yesSensors, 2023
It is challenging to find a proper way to compress computer-generated holography (CGH) data owing to their huge data requirements and characteristics. This study proposes CGH data coding systems with high-efficiency video coding (HEVC), three-dimensional
Tianyu Dong   +3 more
doaj   +1 more source

Conoscopic holography [PDF]

open access: yesOptics Letters, 1985
A new method for recording holograms using incoherent light is described. The method is based on optical propagation through birefringent crystals. Optical methods for the reconstruction of such a hologram are also presented.
Sirat, Gabriel, Psaltis, Demetri
openaire   +3 more sources

RUDIMENTS OF HOLOGRAPHY [PDF]

open access: yesInternational Journal of Modern Physics D, 2003
An elementary introduction to Maldacena's AdS/CFT correspondence is given, with some emphasis in the Fefferman–Graham construction. This is based on lectures given by one of us (E.A.) at the Universidad Autonoma de Madrid.
Álvarez, Enrique   +2 more
openaire   +3 more sources

Multisource Holography

open access: yesACM Transactions on Graphics, 2023
Holographic displays promise several benefits including high quality 3D imagery, accurate accommodation cues, and compact form-factors. However, holography relies on coherent illumination which can create undesirable speckle noise in the final image. Although smooth phase holograms can be speckle-free, their non-uniform eyebox makes them impractical ...
Grace Kuo   +4 more
openaire   +2 more sources

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