Shankoff T A
Appl Opt. 1968 Oct 1;7(10):2101-5. doi: 10.1364/AO.7.002101.
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.
已证明明胶 - 重铬酸盐光敏系统作为二维和三维全息光栅的记录介质非常有效。显影后，对于未调制的薄相位光栅，高达33%的入射读取光被衍射到一级，对于厚全息图则为95%。该材料可以记录至少小至2600埃的光栅间距，并能给出与649F胶片所获得的重建结果相当的结果。0.54的气 - 明胶折射率差被认为是产生高衍射功率的原因。在4880埃处，曝光量从3毫焦到150毫焦不等。某些胶片的感光度在649F全息胶片的两个数量级范围内。
