Linear response deviations during recording of diffraction gratings in photopolymers

Ortuño, Manuel; Neipp, Cristian; Gallego, Sergi

doi:10.1364/oe.17.013193

Cited by 11 publications

(4 citation statements)

References 19 publications

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“…The Runge-Kutta method is now used to solve Eqs. (6)- (13). For each FDTD time step and space grid value in Part I [1], the numerical results are used as the initial conditions for Eqs.…”

Section: B Calculation Methodsmentioning

confidence: 99%

“…For each FDTD time step and space grid value in Part I [1], the numerical results are used as the initial conditions for Eqs. (6)- (13). In this paper, we also reduce the dimensionality of the equations to ease simulation as was already done in Part I [1].…”

Section: B Calculation Methodsmentioning

confidence: 99%

“…During the free radical photopolymerization processes, four primary photochemical reactions are assumed to take place [2,5,[11][12][13]: (1) initiation; (2) propagation; (3) termination; and (4) inhibition. The initiation has been discussed, and the rate equations have been presented in Eqs.…”

Section: Photopolymerizationmentioning

confidence: 99%

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Three-dimensional extended nonlocal photopolymerization driven diffusion model Part II Photopolymerization and model development

Sheridan

2014

J. Opt. Soc. Am. B

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In Part I of this paper [J. Opt. Soc. Am. B 31, 2638], an absorption model is used to predict the dye concentration and light intensity distribution inside a photopolymer medium volume. These results are now used as inputs to a Runge-Kutta algorithm acting as a subgrid of the finite-difference time-domain (FDTD) method. In this way, a full 3D time-dependent nonlocal photopolymerization driven diffusion model is implemented. This enables a more accurate and physical description of the evolutions of the holographic grating. The validity of the proposed model is examined by applying it to fit experimental data for acrylamide/polyvinyl alcohol photopolymer material layers containing the photosensitizer erythrosine B. Material parameter values are estimated by numerically fitting the experimentally obtained refractive index modulation growth curves and angular scans.

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“…The Runge-Kutta method is now used to solve Eqs. (6)- (13). For each FDTD time step and space grid value in Part I [1], the numerical results are used as the initial conditions for Eqs.…”

Section: B Calculation Methodsmentioning

confidence: 99%

Section: B Calculation Methodsmentioning

confidence: 99%

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Three-dimensional extended nonlocal photopolymerization driven diffusion model Part II Photopolymerization and model development

Sheridan

2014

J. Opt. Soc. Am. B

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“…The photopolymers with a hydrophilic matrix as poly(vinyl alcohol), PVA, are versatile holographic recording materials in hologram recording experiments [1][2][3] . They use water as solvent and they can be made in layers with several thickness 4 .…”

Section: Introductionmentioning

confidence: 99%

Initiator system in holographic photopolymer materials

et al. 2010

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The photopolymers with a hydrophilic matrix as poly(vinyl alcohol), PVA, are versatile holographic recording materials in hologram recording experiments. They use water as solvent and they can be made in layers with several thickness. One of the photopolymers more used is composed of acrylamide as polymerizable monomer, PVA and water as binder.The pair: triethanolamine, TEA, and the dye yellowish eosin, YE, is widely used as initiator system due to its high sensitivity and efficiency. TEA is the radical initiator more used with dyes derived from fluorescein as YE because they can generate a radical by redox reaction under dye excitation by light. The dye is bleached in this process because is decomposed in the photoinitiation reaction. The ethylenediaminetetraacetic acid EDTA has a molecular structure very similar to TEA and therefore could replace it in this kind of photopolymers.The 4,4' azo-bis-(4-cyanopentanoic acid), ACPA, is a radical initiator that is soluble in water and usually used in polymerizations in solution with thermal initiation. In this work, we use EDTA and ACPA in order to check their properties as radical initiator in the photochemical reaction that takes place inside the photopolymer while a hologram is being recorded. We will compare the results obtained with those derived from TEA and will evaluate the possibilities for these substances.

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Spherical power error evaluation and stereopsis by using holographic optotype tests

Ventrudo

Navarro-Fuster

Colombo

et al. 2018

Optik

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Linear response deviations during recording of diffraction gratings in photopolymers

Cited by 11 publications

References 19 publications

Three-dimensional extended nonlocal photopolymerization driven diffusion model Part II Photopolymerization and model development

Three-dimensional extended nonlocal photopolymerization driven diffusion model Part II Photopolymerization and model development

Initiator system in holographic photopolymer materials

Spherical power error evaluation and stereopsis by using holographic optotype tests

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