Proceedings PaperModern Interference And Holografic Systems With Diffraction Gratings
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Diffraction interferometers used in diagnostics of phase objects and optical detail control are dealt with in the paper. Some systems with two or more diffraction gratings providing an arbitrary alignment of interference fringes relative to wave-front shear are described. Circuits of interferometers with synthesized reference beam are shown. Such interferometers allow to obtain ordinary and holografic interferograms with wave front shear and interferograms of Zehnder-Mach type ensuring , at the same time, measurement sensitivity increase both in conventional and holografic variants. It is shown, that symmetric and non-symmetric diffraction holographic elements can be used as diffraction gratings allowing to obtain simultaneously several interferograms with different fringe orientation. In conclusion, some applications of described interferometers in heat flow diagnostics and in control of optical elements are cited.