SPECIAL FEATURES OF ITERATION METHODS FOR PHASE PROBLEM IN OPTICS
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The article deals with general conception for phase problem solution by means of extra data sets which are intensity distributions at image formation plane received at variation of one or several parameters of experimental setup. Offered conception allows easy modifying of iterative methods of wave front reconstruction in accordance with specificity of the current tasks. Insertion of essential differences in registering intensity distributions by change of varying parameter in the process of their recording and presence of mathematical model, accurately describing the process of radiation propagation through optical scheme are the key aspects. From this point of view possibilities of nonlinear optical effects application for wave front phase reconstruction were analyzed.