AI Article Synopsis
- The gelatin-dichromate system is an effective medium for creating both 2D and 3D holograms, allowing for significant light diffraction, with up to 95% for thick holograms.
- It can record very fine grating spacings as small as 2600 A and produces reconstructions similar to those achieved with high-quality 649F film.
- The system's high diffraction efficiency, attributed to an air-gelatin index differential of 0.54, means it can work with a range of exposure levels from 3 mJ to 150 mJ at 4880 A.
Article Abstract
The gelatin-dichromate photosensitive system has been shown to be very efficient as a recording medium for both two- and three-dimensional holographic gratings. Upon development, as much as 33% of incident reading light is diffracted into the first order for the unmodulated thin phase gratings and 95% for the thick holograms. The material can record a grating spacing at least as small as 2600 A, and gives reconstructions comparable with those obtained in 649F film. The air-gelatin index differential of 0.54 is considered responsible for the high diffracted powers found. Exposures vary from 3 mJ to 150 mJ at 4880 A. Certain films have speeds within two orders of magnitude of 649F holographic film.
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| http://dx.doi.org/10.1364/AO.7.002101 | DOI Listing |
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