Results 41 to 50 of about 31,877 (296)

Expansion of Image Space in Enhanced-NA Fresnel Holographic Display

open access: yesApplied Sciences, 2022
The enhanced-NA Fresnel hologram reconstructs a holographic image at a viewing angle larger than the diffraction angle of a hologram pixel. The image space is limited by the bandwidth of a digital hologram.
Byung Gyu Chae
doaj   +1 more source

Holographic Geometry and Noise in Matrix Theory

open access: yes, 2009
Using Matrix Theory as a concrete example of a fundamental holographic theory, we show that the emergent macroscopic spacetime displays a new macroscopic quantum structure, holographic geometry, and a new observable phenomenon, holographic noise, with ...
Craig J. Hogan   +3 more
core   +1 more source

The effects of MPE on electro-holographic displays

open access: yesOptics Express, 2014
The effects of MPE (maximum permissible exposure) on the characteristics of electro-holographic displays are analyzed. The main effect is the reduction in the spectral range to be presented by the displays. The range will be reduced more as the pixel and hologram sizes of the displays become smaller and larger, respectively.
Jung-Young Son, Manho Jeong
openaire   +4 more sources

Holographic Higgs Phases [PDF]

open access: yes, 2012
We discuss phases of gauge theories in the holographic context, and formulate a criterion for the existence of a Higgs phase, where the gauge redundancy is "spontaneously broken", in purely bulk language. This condition, the existence of a finite tension
Rozali, Moshe   +2 more
core   +2 more sources

High-Resolution Phase-Only Holographic 3D Display Based on Light Field Images Rendered in the Frequency Domain

open access: yesIEEE Photonics Journal, 2021
Phase-only holograms are more attractive than the amplitude holograms for the higher energy utilization and the possibility to realize on-axis holographic 3D display without conjugate image.
Fuyang Xu   +6 more
doaj   +1 more source

Optimal read/write memory system components [PDF]

open access: yes, 1972
Two holographic data storage and display systems, voltage gradient ionization system, and linear strain manipulation system are discussed in terms of creating fast, high bit density, storage device.
Klinger, D., Kozma, A., Vander Lugt, A.
core   +1 more source

Zoology of Solid & Fluid Holography : Goldstone Modes and Phase Relaxation [PDF]

open access: yes, 2019
We provide a comprehensive classification of isotropic solid and fluid holographic models with broken translational invariance. We describe in detail the collective modes in both the transverse and longitudinal sectors.
Baggioli, Matteo, Grieninger, Sebastian
core   +2 more sources

Ultraviolet–Visible Spin‐Resolved Chip‐Scale Spectroscopy

open access: yesAdvanced Functional Materials, EarlyView.
By harnessing phase, wavelength, and spin multiplexing, the proposed meta‐spectrometer enables spin‐resolved spectral analysis within a compact footprint. The presented dual‐band (320–450 nm) spin‐resolved meta‐spectrometer features enhance optical functionality, allowing for the simultaneous discrimination of spectral content and spin states of light ...
Nasir Mahmood   +9 more
wiley   +1 more source

Universal In Situ Isotope Exchange Raman Spectroscopy (IERS) Methodology for Measuring Oxygen Surface Exchange Dynamics Using a Probe Layer

open access: yesAdvanced Functional Materials, EarlyView.
A bespoke multilayer thin film configuration has been designed, which overcomes the material dependency of conventional isotope exchange Raman spectroscopy (IERS). This universal IERS methodology is efficient, non‐destructive and provides additional structural information and time resolution, which can be further extended to various isotopic elements ...
Zonghao Shen   +7 more
wiley   +1 more source

Projection-type see-through holographic three-dimensional display

open access: yesNature Communications, 2016
The design of holographic displays usually involves a trade-off between size and viewing angle. Here, the authors combine holographic projection with a digitally designed holographic optical element so that display size and the visual angle can be ...
Koki Wakunami   +8 more
doaj   +1 more source

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