Signal-to-noise ratio of nonlinearity recorded holograms of diffuse objects

A nonlinear model for holographic recording materials is used to evaluate the signal-to-noise ratio in diffuse-object holograms. A comparison of this model with the linear model proposed by Upatnieks and Leonard [J. Opt. Soc. Am. 60, 297 (1970)] shows that our model justifies the experimental results obtained for dieletric holograms at high density before bleaching.