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Far-field diffraction pattern of a Bessel-Gauss beam through a pentagonal aperture

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Abstract

We report through of computer simulations and experimental measurements that the dark spots number in the pattern of the far-field diffraction intensity distribution by a nonequilateral pentagonal aperture is just equal to the integer value of the used Bessel-Gauss beam topological charge.

© 2014 Optical Society of America

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