Influence of the physical nature of noise on the dynamic range of thermoplastic storage media

Theoretical calculations are made of the dynamic range of a holographic phase transparency (a planeparallel transparent plate with a one-dimensional sinusoidal signal recorded on one of its faces) made of a thermoplastic storage material. A random modulation of reading signal is assumed in the derivation of explicit expressions for the dynamic range at different spatial frequencies. These expressions are obtained as functions of the spatial frequency number, modulation index of the reading signal, aperture of the lens used for the spectral analysis, and corresponding correlation characteristics of noise. Noise sources of various kinds, causing random amplitude phase modulation of the recorded signal, are considered: they include sources with short-range correlation and long-range correlation, those which are spatially homogeneous or periodically inhomogeneous. An analysis is made of the characteristic features of the dependences of the dynamic range on the parameters of the problem.