Abstract

It is well known that interference fringes formed by an interferometer that is illuminated with a point source are non-localized and, when it is done with an extended source, they are localized. Nevertheless, when the interferometer is illuminated with a discrete succession of points or lines, the localization of the fringes presents some characteristics that are different from those obtained with the former, for example the discrete number of localization surfaces. In this work we obtain the conditions to find the position of the surfaces of localization of these planes for an arbitrary interferometer. Then we apply this method to a wedge interferometer and compare the experimental and theoretical results.

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