Interferometric determination of vector components of relative displacements: theory and experiment

The theory of interferometric method of determination of vector components of relative displacements of two diffusers has been presented. Comparison of this method with the method of holographic interferometry has been made. The common nature of phenomena, on which both methods are based has been shown. The data of experiment, carried out for the verification of theory have been presented. A good agreement between theoretical and experimental data has been obtained.