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arXiv · 2404.14185

Modeling the focusing of a radially-polarized laser beam with an initially flat-top intensity profile

Spencer W. Jolly
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Abstract

Radially-polarized light beams present very interesting and useful behavior for creating small intensity spots when tightly-focused, and manipulating nanostructures or charged particles. The modeling of the propagation of such vector beams, however, is almost always done using the lowest-order fundamental radially-polarized beam due to the complexity of vector diffraction theory. We show how a flat-top radially-polarized beam can be modeled analytically using a sum of higher-order beams, and describe a number of interesting qualities, and compare to numerically-solved integral descriptions.

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Spencer W. Jolly. 2024-04-22. Modeling the focusing of a radially-polarized laser beam with an initially flat-top intensity profile. https://arxiv.org/abs/2404.14185

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