Holographic Lenses in an Environment-Friendly Photopolymer

Lloret, Tomás; Navarro-Fuster, Víctor; Ramírez, Manuel G.; Ortuño, Manuel; Neipp, Cristian; Pascual, Inmaculada

doi:10.3390/polym10030302

Cited by 25 publications

(33 citation statements)

References 46 publications

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“…The main requirement for holographic solar concentrators is a combination of high diffraction efficiency with a wide range of angles of radiation incidence. In the literature are considered the processes of fabrication and properties of diffraction deflectors based on volume [22][23][24][25] or relief structures [26] and also focusing elements [27][28][29][30] as components of solar concentrators. In this section, we consider the properties of structures in Bayfol HX materials and acrylate compositions as applied to the problem of obtaining diffraction deflectors of holographic solar concentrators.…”

Section: Elements Based On Periodic Structures For Energy Applicationmentioning

confidence: 99%

Application of Photopolymer Materials in Holographic Technologies

Vorzobova

Sokolov

2019

Polymers

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The possibility of the application of acrylate compositions and Bayfol HX photopolymers in holographic technologies is considered. The holographic characteristics of materials, their advantages, and limitations in relation to the tasks of obtaining holographic elements based on periodic structures are given. The conditions for obtaining controlled two and multichannel diffraction beam splitters are determined with advantages in terms of the simplicity of the fabrication process. The diffraction and selective properties of volume and hybrid periodic structures by radiation incidence in a wide range of angles in three-dimensional space are investigated, and new properties are identified that are of interest for the development of elements of holographic solar concentrators with advantages in the material used and the range of incidence angles. A new application of polymer materials in a new method of holographic 3D printing for polymer objects with arbitrary shape fabrication based on the projection of a holographic image of the object into the volume of photopolymerizable material is proposed, the advantage of which, relative to additive 3D printing technologies, is the elimination of the sequential synthesis of a three-dimensional object. The factors determining the requirements for the material, fabrication conditions, and properties of three-dimensional objects are identified and investigated.

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Section: Elements Based On Periodic Structures For Energy Applicationmentioning

confidence: 99%

Application of Photopolymer Materials in Holographic Technologies

Vorzobova

Sokolov

2019

Polymers

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“…Es un material cuyas mayores ventajas son la alta compatibilidad con el medio ambiente, y la escasez de toxicidad. Diferentes composiciones se han utilizado en estudios previos [5].…”

Section: Materials De Registrounclassified

“…En ausencia de aberraciones, el valor máximo de la MTF (3) viene determinado por la difracción. La existencia de aberraciones produce un descenso de la curva MTF frente a la υ. Por consiguiente, el rendimiento de un sistema se puede obtener comparando la MTF experimental respecto a la MTF limitada por difracción cuando se tienen la λ y f⁄# (5).…”

Section: A Mtfunclassified

Characterization of registered holographic lenses in a photopolymer compatible with the environment

Lloret¹,

Navarro-Fuster²,

Ramírez³

et al. 2019

Opt. Pura Apl.

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In this work it is presented a device to obtain holographic lenses (LH) in an environmentally compatible photopolymer sensitized at the wavelength of 488 nm. Using this device, LHs reconstructed with two lasers (473 nm and 633 nm), of the same focal and diameter have been obtained, with symmetrical and asymmetric experimental setups, and positive and negative focal. The image quality of these lenses is evaluated: experimentally; from the calculation of the MTF and aberrations, obtained by capturing the image of the focus (PSF) with a CCD sensor, and theoretically; by means of software. It is also proposed a method to improve the image quality of LH's that have more aberrations.

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“…This material, called Biophotopol, is low toxicity and has good recycling properties. It has been used to prepare transmission 1,2,3 and reflection gratings 4 , as well as holographic lenses 5 . Hologram gratings with high maximum diffraction efficiency DEmax are preferred, whereas also it is very important that gratings remain over time.…”

Section: Introductionmentioning

confidence: 99%

Efficient and stable holographic gratings stored in an environmentally friendly photopolymer

Morales-Vidal¹,

Ramírez²,

Sirvent³

et al. 2019

Fourth International Conference on Applications of Optics and Photonics

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Holographic gratings stored in low-toxicity photopolymer, Biophotopol, have been analyzed to achieve stable and efficient holograms. A curing process allows the hologram stabilization, but at the same time, it could produce a diffraction efficiency (DE) reduction. Here, a detailed low-cost LED curing protocol is shown to stabilize over time 1205 l/mm transmission holograms, and at the same time, a 33% DE increment (with respect non-curing holograms) have been demonstrated. Finally, to obtain a better understanding of DE change, a theoretical fit of our experimental result, based on Kogelnik's coupled wave theory was carried out and discussed.

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Holographic Lenses in an Environment-Friendly Photopolymer

Cited by 25 publications

References 46 publications

Application of Photopolymer Materials in Holographic Technologies

Application of Photopolymer Materials in Holographic Technologies

Characterization of registered holographic lenses in a photopolymer compatible with the environment

Efficient and stable holographic gratings stored in an environmentally friendly photopolymer

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