21 October 2011 PVA with nopal dye as holographic recording material
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Abstract
Cactus nopal dye is introduced into a polyvinyl alcohol matrix achieving a like brown appearance thick film, such that they can be used as a recording medium. This dye material provides excellent property as photosensitizer, i.e., easy handling, low cost and can be used in real time holographic recording applications. The experimental results show the diffraction efficiencies obtained by recording grating patterns induced by a He-Cd laser (442nm). For the samples, a thick film of polyvinyl alcohol and dye from cactus nopal was deposited by the gravity technique on a glass substrate. This mixture dries to form a photosensitive emulsion.
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S. Toxqui-López, A. Olivares-Pérez, I. Fuentes-Tapia, B. Pinto-Iguanero, "PVA with nopal dye as holographic recording material", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80110D (21 October 2011); doi: 10.1117/12.901762; https://doi.org/10.1117/12.901762
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