Fabrication and characterization of poly(methyl methacrylate) photopolymer doped with 9,10-phenanthrenequinone (PQ) based derivatives for volume holographic data storage

Lin, Shiuan Huei; Chen, Po‐Lin; Hsiao, Yi-Nan; Whang, Wha Tzong

doi:10.1016/j.optcom.2007.10.039

Cited by 33 publications

(20 citation statements)

References 10 publications

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“…With the transmittance values in the two figures, the DE is calculated from Eq. (8). And with the wavelength at which the diffraction peaks are located (λ exp ) and the Bragg wavelength calculated above in Section 2.C (λ th 656 nm for composition 1 and λ th 655 nm for composition 2), the shrinkage can be calculated from Eq.…”

Section: Reflection Gratings With a Spatial Frequency Of 4600 Linementioning

confidence: 99%

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Holographic grating stability: influence of 4,4′-azobis (4-cyanopentanoic acid) on various spatial frequencies

et al. 2013

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This paper presents the results obtained when holographic gratings were stored with a spatial frequency of 954 and 2663 lines∕mm in transmission geometry and 4600 lines∕mm in reflection geometry in a polyvinyl alcohol/acrylamide-based material. Photopolymers are materials that give good results at low frequencies, but their diffraction efficiency (DE) decreases at high frequencies. A chain transfer agent, 4,4 ′ -azobis (4-cyanopentanoic acid) (ACPA) was incorporated in the material composition to improve spatial resolution. Furthermore, a curing process was applied to the stored gratings in order to maintain the DE stable over time. The DE and shrinkage for symmetric holographic transmission and reflection gratings were measured to evaluate their quality and quantify the improvement produced by ACPA.

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Section: Reflection Gratings With a Spatial Frequency Of 4600 Linementioning

confidence: 99%

“…Research groups around the world are concentrating all their efforts on obtaining a suitable material for this purpose [6][7][8][9][10]. It is important to obtain a material with a high refractive index modulation and high sensitivity as well as good optical quality.…”

Section: Introductionmentioning

confidence: 99%

Holographic grating stability: influence of 4,4′-azobis (4-cyanopentanoic acid) on various spatial frequencies

et al. 2013

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“…Grupos de investigación de todo el mundo utilizan todos sus esfuerzos en obtener un material adecuado para este propósito [17][18][19]. Es importante conseguir un material con una alta modulación de índice de refracción y una alta sensibilidad energética con una buena calidad óptica.…”

Section: Introductionunclassified

Influence of ACPA on the stability of holographic transmission gratings stored in photopolymers

Fernandez-Varo¹,

Rosillo²,

Ortuño³

et al. 2013

Opt. Pura Apl.

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RESUMEN:Este trabajo presenta los resultados obtenidos después de almacenar redes holográficas por transmisión con una frecuencia espacial de 954 líneas/mm y 2663 líneas/mm, en un material basado en PVA/AA. A la composición del material se le ha incorporado un agente acortador de cadenas, el 4,4´-azobis(4-cyanopentanoic acid) (ACPA) para mejorar la respuesta del material a la resolución espacial. Además, se ha aplicado un proceso de curado a las redes almacenadas para fijar el rendimiento en difracción y que no disminuya con el paso del tiempo.Palabras clave: Fotopolímeros, Redes Holográficas por Transmisión, Agente Acortador de Cadenas. ABSTRACT:This paper presents the results obtained after storing holographic transmission gratings with a spatial frequency of 954 lines/mm and 2663 lines/mm in a material based on PVA/AA. A chain transfer agent, the 4,4'-azobis (4-cyanopentanoic acid) (ACPA) has been incorporated in the material composition to improve the response to the spatial resolution. Furthermore, a curing process has been applied to the stored gratings in order to fix the diffraction efficiency over time.

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“…Photopolymer recording materials are particularly attractive for holographic recording applications [1][2][3][4][5][6]; compared with inorganic materials, photopolymers can provide larger refractive index modulation, higher sensitivity and better flexibility in terms of composition. In previous studies, we found that 9,10-phenanthrenequinone (PQ)-doped poly(methyl methacrylate) (PMMA) serves as a good recording material for holographic data storage [6][7][8][9]. During such a holographic recording process, the PQ molecules absorb energy to form an excited state, which undergoes further transfer to a radical state that reacts with residual MMA monomer to form the photoproduct; at the same time, a modulated refractive index change occurs [10].…”

Section: Introductionmentioning

confidence: 99%

Co-doping with polysquaraine enhances the holographic optical data storage of PMMA/PQ photopolymers

Chang

Hsiao

et al. 2011

Journal of Modern Optics

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In this study, we synthesised poly(3-octylpyrrole-co-squaric acid) (PSQ3), a polysquaraine, through the reaction of 3-octylpyrrole and squaric acid, and then co-doped it with phenanthrenequinone (PQ) into poly(methyl methacrylate) (PMMA) to improve the holographic data storage characteristics of the photopolymer. The photopolymers co-doped with relatively small amounts of PSQ3 exhibited greatly improved holographic recording characteristics, including superior diffraction efficiency and dynamic range (M#). Among the samples co-doped with PQ and PSQ3, the maximum diffraction efficiency reached 54.8% (cf. 9.0% for PMMA/PQ) without further downgrade and the value of M# reached 1.05 (cf. 0.46 for PMMA/PQ). Therefore, the holographic data storage characteristics of the photopolymer PMMA/PQ were improved through codoping with PSQ3.

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Fabrication and characterization of poly(methyl methacrylate) photopolymer doped with 9,10-phenanthrenequinone (PQ) based derivatives for volume holographic data storage

Cited by 33 publications

References 10 publications

Holographic grating stability: influence of 4,4′-azobis (4-cyanopentanoic acid) on various spatial frequencies

Holographic grating stability: influence of 4,4′-azobis (4-cyanopentanoic acid) on various spatial frequencies

Influence of ACPA on the stability of holographic transmission gratings stored in photopolymers

Co-doping with polysquaraine enhances the holographic optical data storage of PMMA/PQ photopolymers

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