Proceedings PaperResolution and field-range limitations in holography imposed by film MTF and nonlinearity
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An exact method for the evaluation of the effects of the finite spatial resolution and the nonlinearity of the recording material on the reconstructed holographic image is presented in this paper. This new method is based on substitution of the amplitude transfer function and the amplitude diffraction efficiency vs. bias exposure and beam ratio characteristics of the recording material to the double Fresnel-Kirchoff integral descripting the complex amplitude of the reconstructed image. All the above characteristics have been fitted by analytical functions. The contrast of the reconstructed image as a function of various parameters such as the spatial resolution limit of the recording material, the object position, and the beam ratio has been computed by numerical quadrature of the above mentioned integral. Numerical calculations have been carried out for thin amplitude holograms of microline objects in several different recording geometries, including those with a tilted object plane.