Holographic Recording Medium

Samui, A. B.

doi:10.2174/1874465610801010074

Cited by 8 publications

(6 citation statements)

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“…It can be understood with the following explanations [14,15]: (1) two beams of light intersect in the material to generate a pattern of dark and bright fringes; (2) electrons/holes in bright fringes can be photo-excited to be able to move freely throughout the material; (3) these electrons/holes move under the influence of an applied electric field until trapped in the dark fringes, along with holes/electrons left behind, creating a locally varying space charge field; (4) this varying space charge field in turn changes the refractive index of the local molecules. This effect is firstly observed in inorganic photorefractive crystals [16,17], then organic photorefractive polymers emerge as an alternative for the advantages of large electro-optic response, ease of synthesis, and large area device fabrication.…”

Section: Review Holographic Recording Media Photorefractive Polymers mentioning

confidence: 99%

“…Since the whole process only involves with light, photochromic polymers can work without any electric field. To act as updatable recording media, the photochromic polymers are supposed to possess fast response, thermal stability of both isomers, resistance to fatigue during cyclic write-and-erase, and high sensitivity [14].…”

Section: Photochromic Polymers Mechanismmentioning

confidence: 99%

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Recent advances in holographic recording media for dynamic holographic display

Chen¹,

Su²,

Jhun³

2014

J Opt Photonics

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An overview of the recent advances in the state-of-the-art holographic recoding media dedicated to the dynamic holography display is presented in this paper. Unlike the traditional holographic media, those materials enable the holograms to be updatable rather than permanent like before. Over the past few years, a number of material recipes for this use have been disclosed and can be mainly divided into four classesphotorefractive/photochromic polymers and photorefractive/photochromic liquid crystals. Focusing on five key material properties related to the display application, including diffraction efficiency, applied electric field, recording intensity, rise time and memory, the important findings as well as the underlying mechanisms are unraveled with in-depth discussion. Moreover, a comparison of the four classes of materials is provided, followed by a projection of the potential challenges.

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Section: Review Holographic Recording Media Photorefractive Polymers mentioning

confidence: 99%

Section: Photochromic Polymers Mechanismmentioning

confidence: 99%

Recent advances in holographic recording media for dynamic holographic display

Chen¹,

Su²,

Jhun³

2014

J Opt Photonics

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“…Additionally, new trends in photopolymers include better environmental compatibility, low toxicity, ease of production and good recycling properties. We describe our line of research on this subject and the main results obtained with biophotopol, a new type of photopolymeric material that the Holography and Optical Processing research team at the University of Alicante is developing [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Biophotopol: A Sustainable Photopolymer for Holographic Data Storage Applications

et al. 2012

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Photopolymers have proved to be useful for different holographic applications such as holographic data storage or holographic optical elements. However, most photopolymers have certain undesirable features, such as the toxicity of some of their components or their low environmental compatibility. For this reason, the Holography and Optical Processing Group at the University of Alicante developed a new dry photopolymer with low toxicity and high thickness called biophotopol, which is very adequate for holographic data storage applications. In this paper we describe our recent studies on biophotopol and the main characteristics of this material.

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“…These properties make polarization gratings useful for numerous optical applications related to polarization discrimination (Davis et al, 2001;Asatryan et al, 2004), control (Nikolova et al, 1997;Hasman et al, 2002), and measurement (Gori, 1999;Provenzano et al, 2006). Polarization gratings can be fabricated by holographic exposure with polarized interference light in photoanisotropic media such as azobenzene-containing polymer (azopolymer) films Ebralidze et al, 1992;Huang and Wagner, 1993;Samui, 2008). Since azobenzene molecules reorient in accordance with polarization of light resulting from trans-cis-trans photoisomerization reactions, periodic structures are formed as spatial distribution of the molecular orientation by holographic recording using vectrial light (i.e., by vector holography).…”

Section: Introductionmentioning

confidence: 99%