Abstract

A convenient expression describing the location of Fresnel diffraction patterns when a diffracted spherical wave is focused by a lens is given. Experimental results confirm the predicted positions of 26 axial extrema corresponding to integer numbers of Fresnel half-period zones. Experimental radial intensity profiles are presented for some of these positions.

© 1986 Optical Society of America

Huygens–Fresnel–Kirchhoff wave-front diffraction formulation: spherical waves

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Imaging in optical systems of finite Fresnel number

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Effect of the aperture–lens separation on the focal shift in large-F-number systems

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Huygens–Fresnel–Kirchhoff wave-front diffraction formulation: paraxial and exact Gaussian laser beams

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