Noise sources in silver halide volume diffuse-object holograms

Noise sources in silver halide volume diffuse-object holograms

Noise gratings in bleached silver halide diffuse-object holograms.

Noise gratings in diffuse-object holograms recorded as volume phase holograms in bleached silver halide emulsion are experimentally analyzed. Measurements of the diffraction efficiency and the noise of the holograms are taken. The experimental results obtained show that there is a drop not only in the diffraction efficiency but also in the noise that is due to the presence of noise gratings.

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 intensities on the characteristics of diffuse-object holograms recorded as volume phase holograms in bleached silver halide emulsion is experimentally analyzed. Measurements of the diffraction efficiency and the signal-to-noise ratio of the holograms are taken. The experimental results presented show that when the beam ratio incr...

Polarization influences on the efficiency of noise gratings recorded in silver halide holograms.

The efficiency of noise gratings recorded with single-beam exposures in bleached silver halide emulsions is analyzed as a function of the polarization state of the readout wave. Experimental results are presented and discussed on the basis of a theoretical model that considers both a linear and a nonlinear relation between the refractive-index modulation and the exposure. The dependence of the ...

Holographic storage in bleached emulsion of N divergent object beams generated by a two-dimensional regular array: analysis of the signal-to-noise ratio.

The signal-to-noise ratio (SNR) of multiplexed holograms of N object waves recorded as volume-phase holograms in bleached silver halide emulsion are experimentally analyzed and compared with those of diffuse-object holograms. We introduce two types of SNR: one belonging to the spatial matrix itself, and the other, the overall SNR, for which the angular range of the matrix distribution was compa...