DIFFUSE-OBJECT HOLOGRAMS IN SILVER-HALIDE EMULSIONS - INFLUENCE OF THE BEAM RATIO ON THE EFFICIENCY AND THE SIGNAL-TO-NOISE RATIO

The influence of the beam ratio between reference and object beam inte nsities on the characteristics of diffuse-object holograms recorded as volume phase holograms in bleached silver halide emulsion is experime ntally analyzed. Measurements of the diffraction efficiency and the si gnal-to-noise ratio of the holograms are taken. The experimental resul ts presented show that when the beam ratio increases, the diffraction efficiency decreases and the signal-to-noise ratio increases; these tw o holographic parameters behave in this way no matter what type of pro cessing is used. (C) Optical Society of America