Derivation of an analytical expression for the path difference of the rays passed through Jamin interferometer

Jamin interferometer is chosen for functioning of processing system of holographic interferograms using dual-frequency radiation. The optical scheme of the light rays passing through the plates of Jamin interferometer and the scheme to the calculation of path difference of the rays in the interferometer are given. The results of the interferometer analysis in the strict narrative are obtained. The analytical expression for the phase difference of the rays passed through Jamin interferometer is derived.