Method for making high efficiency holograms

Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Physical developing

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430 1, G03H 118, G03C 522

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044227132

ABSTRACT:
A method for making high diffraction efficiency holograms from dichromated gelatin (DCG) including the steps of curing the DCG for a specified time under controlled temperature and humidity conditions, periodically removing the DCG material from the curing conditions, placing a dye spot on the cured DCG material, measuring the extent of diffusion of the dye spot after a predetermined time, replacing the DCG material into the curing conditions, repeating the method until dye spot diffusion of a predetermined size occurs, and using the DCG material at that cure state to make holograms.

REFERENCES:
Photographic Science and Engineering, vol. 24, No. 3, May/Jun. 1980, "The Mechanism of Volume Hologram Formation in Dichromated Gelatin," D. M. Samoilovich, A. Zeichner and A. A. Friesem, pp. 161-166.

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