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Multi-layered holograms due to their multi-beam interference have other features contrary to usual bulk holograms. Analysis of the properties of such holograms is provided by coupled waves method. For two-layered holograms we can see oscillations of the dependence of diffraction efficiency on an angle incident onto a hologram or on the wavelength of incident beam, and besides oscillation period is defined mainly by the distance between holograms. Multi-layered holograms could be presented as two-dimensional periodic structures, for which variable of the dielectric constant (variable component of refractive index) could be shown as multiplication of two periodical functions.
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Tom
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769--780
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bibliogr. 13 poz.
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- National University Lvivska Polytechnica, 12 S. Bandery Str., 79013 Lviv, Ukraine
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Bibliografia
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bwmeta1.element.baztech-article-BPW1-0013-0010