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Walsh functions: analysis of their properties under Fresnel diffraction

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The free-propagation properties of the light field diffracted by an aperture, have been investigated by employing a formalism based on the orthogonal and complete set of Walsh functions. We found an interesting link with the well-known self-imaging phenomenon, which can be used to explain the spatial filtering properties of many optical devices. An experimental result is given in order to illustrate this approach.

Palabras clave
light field diffracted
free-propagation properties
Walsh functions

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