Abstract

Near-field irradiance patterns have been calculated for plane-wave gaussian beams truncated by circular apertures. The Kirchhoff diffraction integral was integrated numerically, using the small-angle Fresnel approximation. The effect of truncation was important when the aperture radius was less than twice the spot size of the gaussian beam.

© 1969 Optical Society of America

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Diffraction by Gaussian Apertures

G. Oluremi Olaofe
J. Opt. Soc. Am. 60(12) 1654-1657 (1970)

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Equations (6)

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