SILVER-HALIDE SENSITIZED GELATIN DERIVED FROM AGFA-GEVAERT HOLOGRAPHIC PLATES

To our knowledge only one processing formula for silver-halide sensiti zed gelatin (SHSG) derived from Agfa-Gevaert holographic plates has be en published in the current literature, which is apparently a result o f the extremely high degree of hardening of the gelatin emulsion. We p ropose a modified processing formula for SHSG derived from Agra-Gevaer t plates. The holographic characteristics of the processed SHSG plates were measured and high diffraction efficiency, as high as 80%, and an almost flat spatial-frequency response within the region of interest were achieved. Some of our observations during the experiments are dis cussed. The behavior of the gelatin emulsion was consistent with the m odels for processing dichromated gelatin. We observed swelling rather than the shrinkage expected from the removal of the silver-halide grai ns. This swelling can be controlled by postbaking.