Compensation of Aberrations and an Arbitrary Tuning of Reference Fringes in Holographic Processing of Grating Images Perturbed by a Phase Object

摘要

A method is developed for the compensation of aberrations when obtaining an arbitrary tuning of reference fringes by using a pair of photographs of images of a two-dimensional grating, one of which is perturbed by optical inhomogeneities. The method is based on the separate rewriting of information about x- and y-components of the gradient of the refractive index in a phase object under study onto two separate two-exposure holograms. Experimental results obtained in evaluation tests of the method are presented.