Influence of some parameters on grating structure and diffraction efficiency in red-sensitive dichromated gelatin (DCG)

Thomas Rimpler; Guenther K.G. Wernicke; Hartmut Gruber

doi:10.1117/12.201885

17 February 1995 Influence of some parameters on grating structure and diffraction efficiency in red-sensitive dichromated gelatin (DCG)

Thomas Rimpler, Guenther K.G. Wernicke, Hartmut Gruber

Author Affiliations +

Proceedings Volume 2333, Fifth International Symposium on Display Holography; (1995) https://doi.org/10.1117/12.201885
Event: Display Holography: Fifth International Symposium, 1994, Lake Forest, IL, United States

Abstract

Dichromated gelatin with methylene blue is red sensitive. Tetramethylguanidine intensifies this red sensitivity. Such an emulsion was used to produce holographic plates to inscribe a transmission grating with a Kr⁺-laser and to investigate some procedure and development parameters on the structure and diffraction efficiency. Ratio and concentration of prehardener, fixer, sensitizing solution, and pH-dependence were investigated. For the development, a six-step development process gave the best results. Influence of room humidity and storage time are important. The optimized process needs 3 hours from the first step to the finished hologram grating. More than 70% diffraction efficiency is possible. The coating method allows for the making of layers of different thickness and therefore volume effects can be observed.

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Thomas Rimpler, Guenther K.G. Wernicke, and Hartmut Gruber "Influence of some parameters on grating structure and diffraction efficiency in red-sensitive dichromated gelatin (DCG)", Proc. SPIE 2333, Fifth International Symposium on Display Holography, (17 February 1995); https://doi.org/10.1117/12.201885

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