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Optical Engineering

Red sensitive dichromated gelatine: investigations on the influence of some parameters on diffraction efficiency
Author(s): Thomas Rimpler; Guenther K.G. Wernicke; Hartmut Gruber
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Paper Abstract

Dichromated gelatin with methylene blue is red sensitive. Tetramethylguanidine intensifies this red sensitivity. Holographic plates covered with such an emulsion were used to investigate the influence of some procedure and development parameters on the structure and diffraction efficiency of holographic gratings. The ratios and concentrations of prehardener, fixer, and sensitizing solution, as well as the pH dependence and storage time, have been investigated. The best results were obtained by a six-step development process. The optimized process needs 3 h from the first step to the final hologram grating. By adapting all investigated parameters, more than 70% diffraction efficiency was achieved. Volume effects in layers of different thickness have been investigated.

Paper Details

Date Published: 1 April 1995
PDF: 4 pages
Opt. Eng. 34(4) doi: 10.1117/12.196522
Published in: Optical Engineering Volume 34, Issue 4
Show Author Affiliations
Thomas Rimpler, Humboldt Univ. zu Berlin (Germany)
Guenther K.G. Wernicke, Humboldt Univ. zu Berlin (Germany)
Hartmut Gruber, Humboldt Univ. Berlin (Germany)

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