Abstract

Propagation of an axially symmetrical beam through an apodizer comprising a circular serrated aperture and a spatial filter is considered on the basis of the parabolic equation solution. In Part II, the equation is solved for uniform and Gaussian beams with a flat wavefront propagating from the spatial filter pinhole to its exit. It is shown that serrations with complex shapes (for instance, cosine or parabolic) have no advantage over a simple triangular shape: practically the same beam profiles can be obtained with triangular serrations of slightly different size.

© 2019 Optical Society of America

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