Panchromatic ultra-fine-grain silver halide emulsions and their properties in reflection holography

摘要

Silver halide emulsions with average grain size around 10nm and red-green-blue sensitivities were prepared in our laboratory. The influences of some preparing conditions on the emulsion grain size and spectral sensitivity were discussed. The emulsions were used to record holographic reflection gratings for investigating their properties in reflection holography. The reflection gratings were processed in a modified AAC developer and modified R-10 bleach. Diffraction efficiencies of the reflection gratings were up to 55% for the exposure of 1.8mJ/cm~2 at 633 nm, 55% for the exposure of 2.2mJ/cm~2 at 515nm and 50% for the exposure of 3.3mJ/cm~2 at 458nm.