Phase holograms in silver halide emulsions without a bleaching step

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Title: Phase holograms in silver halide emulsions without a bleaching step
Authors: Beléndez, Augusto | Madrigal Madrigal, Roque Fernando | Pascual, Inmaculada | Fimia Gil, Antonio
Research Group/s: Holografía y Procesado Óptico
Center, Department or Service: 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
Keywords: Holography | Holographic recording materials | Silver halide emulsions | Phase holograms
Knowledge Area: Óptica | Física Aplicada
Date Created: 1999
Issue Date: 17-Mar-2000
Publisher: SPIE, The International Society for Optical Engineering
Citation: BELÉNDEZ VÁZQUEZ, Augusto, et al. "Phase holograms in silver halide emulsions without a bleaching step". En: Practical holography XIV and holographic materials VI : 24-25 January 2000, San Jose, California. Bellingham, Wash. : SPIE, 2000. (Proceedings of SPIE; Vol. 3956). ISBN 978-0-81943-574-3, pp. 376-382
Abstract: Phase holograms in holographic emulsions are usually obtained by two bath processes (developing and bleaching). In this work we present a one step method to reach phase holograms with silver-halide emulsions. Which is based on the variation of the conditions of the typical developing processes of amplitude holograms. For this, we have used the well-known chemical developer, AAC, which is composed by ascorbic acid as a developing agent and sodium carbonate anhydrous as accelerator. Agfa 8E75 HD and BB-640 plates were used to obtain these phase gratings, whose colors are between yellow and brown. In function of the parameters of this developing method the resulting diffraction efficiency and optical density of the diffraction gratings were studied. One of these parameters studied is the influence of the grain size. In the case of Agfa plates diffraction efficiency around 18% with density < 1 has been reached, whilst with the BB-640 emulsion, whose grain is smaller than that of the Agfa, diffraction efficiency near 30% has been obtained. The resulting gratings were analyzed through X-ray spectroscopy showing the differences of the structure of the developed silver when amplitude and transmission gratings are obtained. The angular response of both (transmission and amplitude) gratings were studied, where minimal transmission is showed at the Braggs angle in phase holograms, whilst a maximal value is obtained in amplitude gratings.
Sponsor: This work was financially supported by the Comisión Interministerial de Ciencia y Tecnología (CICYT) of Spain (project MAT97-0705-C02-02).
ISBN: 978-0-81943-574-3
ISSN: 0277-786X
DOI: 10.1117/12.380018
Language: eng
Type: info:eu-repo/semantics/article
Rights: Copyright 2000 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE, Vol. 3956, and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Peer Review: si
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