High-energy sensitivity enhancement in panchromatic photopolymers for holography using a mixture of visiblelight photoinitiators
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Título: | High-energy sensitivity enhancement in panchromatic photopolymers for holography using a mixture of visiblelight photoinitiators |
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Autor/es: | Fimia Gil, Antonio | Mateos Álvarez, Felipe | Mallavia Marín, Ricardo | Blaya Escarre, Salvador | Beléndez, Augusto | Sastre Muñoz, Roberto | Amat Guerri, Francisco |
Grupo/s de investigación o GITE: | Holografía y Procesado Óptico |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad Miguel Hernández. Departamento de Ciencia de Materiales, Óptica y Tecnología Electrónica | Instituto de Química Orgánica General | Instituto de Ciencia y Tecnología de Polímeros |
Palabras clave: | Holography | Holographic recording materials | Photopolymers |
Área/s de conocimiento: | Óptica | Física Aplicada | Química Orgánica |
Fecha de creación: | 30-nov-1998 |
Fecha de publicación: | jun-1999 |
Editor: | Taylor & Francis |
Cita bibliográfica: | FIMIA GIL, Antonio, et al. “High-energy sensitivity enhancement in panchromatic photopolymers for holography using a mixture of visiblelight photoinitiators”. Journal of Modern Optics. Vol. 46, No. 7 (June 1999). ISSN 0950-0340, pp. 1091-1098 |
Resumen: | A new aqueous photopolymer containing the monomers acrylamide, N,N'-methylenbisacrylamide and zinc acrylate, the initiators 4,5-diiodosuccinylfluorescein (2ISF) and methylene blue (MB), and the coinitiator sodium p-toluenesulphinate is described. This formulation exhibits a clear enhancement of the high-energy sensitivity upon irradiation with 514 or 633 nm light (Ar+ laser or He-Ne laser respectively), with respect to the same mixture but with only one of the two dyes, reaching maximum diffraction efficiencies of 15-20% with 15-60 mJ cm-2. This enhancement is explained by the more efficient photogeneration of initiator radicals by the ground-state formation of an ion-pair complex between cationic (MB) and anionic (2ISF) chromophores. This must compensate the observed decrease in the absorbance of the mixture of the two dyes at 514 nm, with respect to the absorbance of the same medium but with only 2ISF (maximum absorption at 490 nm). A clear absorbance increase at 633 nm, with respect to the absorbance of this system with only MB (maximum absorption at 660 nm), must also favour photopolymerization. |
Patrocinador/es: | This work was supported by the CICYT, Spain, under projects MAT93-0369 and MAT94-0757. |
URI: | http://hdl.handle.net/10045/9345 |
ISSN: | 0950-0340 (Print) | 1362-3044 (Online) |
DOI: | 10.1080/09500349908230402 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | This is an electronic version of an article published in the Journal of Modern Optics ©1999 Copyright Taylor & Francis; Journal of Modern Optics is available online at http://www.informaworld.com |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1080/09500349908230402 |
Aparece en las colecciones: | INV - GHPO - Artículos de Revistas |
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JMO_v46_n7_p1091_1999.pdf | Versión final (acceso restringido) | 348,11 kB | Adobe PDF | Abrir Solicitar una copia |
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