Fields of a radially polarized Gaussian laser beam beyond the paraxial approximation

Abstract

Analytic expressions for the fields of a tightly focused radially polarized Gaussian laser beam are derived, accurate to ${ϵ}^5$, where ϵ is the associated diffraction angle. The fields satisfy Maxwell’s equations, and the calculated beam power based on them is significantly different from that of the paraxial-approximation fields.

© 2006 Optical Society of America

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