Prism application for interference figures - used in holographic interferometer with two prisms of different refractive index

摘要

Application of a double prism, including Wollaston prim, for holographic production of an underground interference band system in bolometers with the double prism in the area of a diverging or converging beam. The double prism is moved between successive exposures of the hologram plate in the direction of the axis of the interferometer. A similar functioning of the prism is given e.g. by the production of the so-called 'living interferences' by means of a hologram created by a simple illumination. The second illumination is replaced by direct observation of the object in the light of the laser through the finished hologram plate during simultaneous reconstruction of the first hologram.