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Proceedings Paper

Holographic recording diffraction gratings in BB640 photographic emulsions with femtosecond pulses in infrared region
Author(s): Antonio Fimia; Pablo Acebal; Salvador Blaya; Luis Carretero; Roque F. Madrigal; Angel Murciano; Jose Neftalí
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Paper Abstract

Silver halide materials have occupied an important place in the recording of images. The reason is mainly given by the high sensitivity of the recording medium, thus permitting the use of minimal levels light and hence easing the stability problems of apparatus and the need for high powered laser equipment. When the film is exposed in a holographic process a latent image of a diffraction grating is formed. The developing solution reduces exposed silver halide grains to silver at a higher rate than the unexposed grains. Among the commercial emulsions, recently good results have been reported in BB-640 photographic emulsions, since in this work we present the experimental results related to the response of this emulsion to the interference of pulsed Gaussian beams. For this, diffraction gratings were recorded by the interference of pulsed Gaussian beams with 120 fs of width, 76 MHz of frequency repetition and central wavelength of 790 nm, where the transmittance of this emulsion is higher than 99%. As a result, diffraction efficiencies up to 30% were obtained with low sensitivities due to the low absorption and grain size (18 - 20nm). The thickness of the photographic emulsions and the bleached process has been analyzed and the sensitivity has been optimized with D8 developer.

Paper Details

Date Published: 11 May 2011
PDF: 8 pages
Proc. SPIE 8074, Holography: Advances and Modern Trends II, 80740D (11 May 2011); doi: 10.1117/12.887024
Show Author Affiliations
Antonio Fimia, Univ. Miguel Hernández de Elche (Spain)
Pablo Acebal, Univ. Miguel Hernández de Elche (Spain)
Salvador Blaya, Univ. Miguel Hernández de Elche (Spain)
Luis Carretero, Univ. Miguel Hernández de Elche (Spain)
Roque F. Madrigal, Univ. Miguel Hernández de Elche (Spain)
Angel Murciano, Univ. Miguel Hernández de Elche (Spain)
Jose Neftalí, Univ. Miguel Hernández de Elche (Spain)


Published in SPIE Proceedings Vol. 8074:
Holography: Advances and Modern Trends II
Miroslav Hrabovský; Miroslav Miler; John T. Sheridan, Editor(s)

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