The possibility of the visualization of the defects of a separate component of the thin composite diffractive optical element has been demonstrated. This element represents a thin substrate composition and a pair of combined elementary gratings. Possible variants of the defects visualization as the substrate and of the separate elementary gratings of the diffraction optical element have been considered. In-terference methods well developed in holographic interferometry of phase objects have been used. Experimental results have been presented.
Keywords: diffractive optical element, diffraction grating, light wave, visualization of the defect, interference pattern.
N.T. Avlasevich – Y. Kupala Grodno State University
A.M. Lyalikov – Y. Kupala Grodno State University