Rehalogenating bleaches for photographic phase holograms. 2: Spatial frequency effects.

The use of a rehalogenating bleach without fixing to produce photographic phase holograms has the advantage that emulsion shrinkage is minimized. Experimental results are presented which show that the diffraction efficiency obtained with such bleaches varies considerably with the spacing of the hologram fringes. These results throw additional light on the mode of operation of rehalogenating bleaches and lead to an estimate of the diffusion length of the silver ion in the bleach bath.