Results 21 to 30 of about 659,213 (221)

Multiplexed holographic transmission gratings recorded in holographic polymer-dispersed liquid crystals: static and dynamic studies [PDF]

open access: yes, 2005
The optimization of the experimental parameters of two multiplexed holographic transmission gratings recorded in holographic polymer-dispersed liquid crystals is investigated.
Camacho, Maria   +9 more
core   +1 more source

Single-shot digital holographic microscopy based on computational telecentricity using a single-arm off-axis interferometer

open access: yesICT Express, 2018
We propose a single-shot digital holographic microscopy based on computational telecentricity with a single-arm off-axis interferometer (SA-OAI), which is composed of optical recording, computational compensation and retrieving processes.
Seong-Jin Park   +2 more
doaj   +1 more source

Dynamic holographic interferometry using a Bi12SiO20 photorefractive crystal and monomode optical fibres [PDF]

open access: yes, 1993
Dynamic holographic interferometry using polarization preserving opticai fibres as light guides and incorporating a photorefractive Bi12SiO20 (BSO) crystal as the recording medium is described.
Potter, J, Spooncer, RC, Hobson, PR
core   +4 more sources

A Virtual Optical Holographic Encryption System Using Expanded Diffie-Hellman Algorithm

open access: yesIEEE Access, 2021
This paper presents a new method for encrypting information over a Virtual Optical Holographic Encryption (VOHE) system which employs a virtual optical system based on digital holography and Fourier lens.
Yang Peng   +4 more
doaj   +1 more source

CALCULATION OF DUAL-BAND HOLOGRAPHIC LENS

open access: yesInterexpo GEO-Siberia, 2021
The paper proposes two-component holographic systems with two working spectral ranges: infrared and visible spectral ranges.
Yury Ts. Batomunkuev   +1 more
openaire   +1 more source

Ring-shaped bifocal lens used for fluorescent self-referenced holographic imaging [PDF]

open access: yes, 2016
We propose an alternative and simple solution to self-referenced digital holographic imaging based on a ring-shaped bifocal lens, without the need of any mirrors, polarizers or spatial light modulators.
Márton Zsolt Kiss
core   +1 more source

Covariant Holographic Renormalization of Non-Conformal Field Theories [PDF]

open access: yes, 2010
We present a Covariant Holographic Renormalization (CHR) procedure of fake supergravity (sugra) systems. Holography is a strong/weak coupling duality between gravitational and gauge theories, and fake sugra is a theory of gravity coupled to scalars in ...
Van Eijk, Ernestus Petrus
core   +1 more source

Volume Holographic Optical Elements as Solar Concentrators: An Overview

open access: yesApplied Sciences, 2019
Generally, to reduce the area of a photovoltaic cell, which is typically very expensive, solar concentrators based on a set of mirrors or mechanical structures are used.
Maria Antonietta Ferrara   +2 more
doaj   +1 more source

A non-coherent holographic correlator based on a digital micromirror device [PDF]

open access: yesКомпьютерная оптика, 2018
The possibility of application of a digital micromirror device (DMD) as a spatial light modulator for outputting holographic filters in an optical correlator illuminated by quasi-monochromatic spatially incoherent radiation was discussed.
Vladislav Rodin
doaj   +1 more source

A holographic system for subsea recording and analysis of plankton and other marine particles (HOLOMAR) [PDF]

open access: yes, 2003
We report here details of the design, development, initial testing and field-deployment of the HOLOMAR system for in-situ subsea holography and analysis of marine plankton and nonliving particles.
Player, M.A.   +75 more
core   +1 more source

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