EVALUATION OF THE IMAGING PROPERTIES OF HOLOGRAMS RECORDED IN MATERIALS OF LIMITED SPATIAL-RESOLUTION

A new method for the evaluation of the effects of the finite spatial r esolution of the recording material on the reconstructed holographic i mage is presented. The method is based on substitution of the amplitud e modulation transfer function (the square root of the modulation tran sfer function) of the recording material into the double Fresnel-Kirch hoff integral describing the complex amplitude of the reconstructed im age. Numerical calculations have been carried out for holograms record ed in silver halide and thermoplastic-photoconductor materials. The co ntrast of the reconstructed image as a function of various recording p arameters, such as the resolution limit and slope (in case of silver h alides), and the center and width (in case of thermoplastics) of the a mplitude modulation transfer function of the recording material, the o bject position and the reference beam angle has been computed. Thin ho lograms of microline objects have been studied in several recording ge ometries, including one with a tilted object plane.