Diffraction efficiency and signal-to-noise ratio of diffuse-object holograms in real time in polyvinyl alcohol photopolymers

García, Celia; Pascual, Inmaculada; Fimia, A.

doi:10.1364/ao.38.005548

Cited by 12 publications

(5 citation statements)

References 7 publications

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“…To prepare the material a method similar to that described in other papers was used [18][19][20][21]. A polymerization solution was prepared using polyvinylalcohol 18-88 (PVA) provided by Fluka as a binder, acrylamide (AA) as monomer and yellowish eosin as dye.…”

Section: Angular Responses Of First and Second Orders For Unslanted Tmentioning

confidence: 99%

Angular responses of the first and second diffracted orders in transmission diffraction grating recorded on photopolymer material

Neipp¹,

Gallego²,

Ortuño³

et al. 2003

Opt. Express

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Some of the theoretical models in the literature describing the mechanism of hologram formation in photopolymer materials predict the existence of higher harmonics in the Fourier expansion of the recorded refractive index. Nevertheless, quantitative information is only obtained for the first harmonic of the refractive index using Kogelnik's Coupled Wave Theory. In this work we apply the Rigorous Coupled Wave Theory to demonstrate that when recording phase diffraction gratings in PVA/acrylamide photopolymer materials, a second order grating is also recorded in the hologram even when the material is exposed to a sinusoidal interference pattern. The influence of this second order grating on the efficiency of the first order for replay at the first on-Bragg angular replay condition is studied and the size of the 2 nd harmonic examined.

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Section: Angular Responses Of First and Second Orders For Unslanted Tmentioning

confidence: 99%

Angular responses of the first and second diffracted orders in transmission diffraction grating recorded on photopolymer material

Neipp¹,

Gallego²,

Ortuño³

et al. 2003

Opt. Express

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show abstract

“…In this paper we work with PVA/acrylamide photopolymer. The behaviour of this photopolymer is well know [4][5][6][7][8]. Now we evaluate the temporal evolution in darkness, after exposure, of an overmodulation of refractive index and the resulting angular response of diffraction efficiency, obtained using Kogelnik's theory for the volume phase transmission holograms recorded.…”

Section: Introductionmentioning

confidence: 99%

Temporal evolution of the angular response of a holographic diffraction grating in PVA/acrylamide photopolymer

Gallego¹,

Ortuño²,

Neipp³

et al. 2003

Opt. Express

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Abstract:In this paper we evaluate the temporal evolution, after exposure, of a diffraction grating stored in a PVA/acrylamide photopolymer. We also study the overmodulation of the refractive index inside the hologram, which gives rise to a particular behaviour of the angular response of diffraction efficiency. This evolution takes place in our photopolymer due to the incorporation of dimethylacrylamide (DMAA), which is a liquid at room temperature and so favours diffusion of the species in solution from the zones of greater concentration to those of lower concentration.

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“…It has suitable properties for recording media due to its resistance to most oils and solvents while exhibiting high tensile strength and flexibility. Although its physical properties are subject to change due to variation in humidity, it found some use in holography, and different compositions of it have been prepared to improve the diffraction efficiency . Holographic PVA-based matrixes have been cross-linked with Cr(III) ions, which allowed maintaining adequate porosity and elasticity for sensing applications .…”

Section: The Prospects For Holographic Sensorsmentioning

confidence: 99%

Holographic Sensors: Three-Dimensional Analyte-Sensitive Nanostructures and Their Applications

Naydenova²,

et al. 2014

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Diffraction efficiency and signal-to-noise ratio of diffuse-object holograms in real time in polyvinyl alcohol photopolymers

Cited by 12 publications

References 7 publications

Angular responses of the first and second diffracted orders in transmission diffraction grating recorded on photopolymer material

Angular responses of the first and second diffracted orders in transmission diffraction grating recorded on photopolymer material

Temporal evolution of the angular response of a holographic diffraction grating in PVA/acrylamide photopolymer

Holographic Sensors: Three-Dimensional Analyte-Sensitive Nanostructures and Their Applications

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