FOCUSING PROPERTIES OF FRACTAL ZONE PLATES
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The results of analytical and computer modeling of Fresnel diffraction of mono- and polychromatic light sources from the zone plates with fractal structure are presented. It is shown that the axial irradiance has additional peaks of intensity and exhibits fractal behavior. It is demonstrated that the application of fractal zone plates allows reducing chromatic aberrations by white light illumination in comparison with conventional Fresnel zone plates. The modeling was realized for fractal zone plates with different fractal dimension and generation level.
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