paper

Cylindrically polarized Bessel-Gauss beams

arXiv:1410.1359 · doi:10.1088/2040-8978/17/2/025603

Abstract

We present a study of radially and azimuthally polarized Bessel-Gauss beams in both the paraxial and nonparaxial regimes. We discuss the validity of the paraxial approximation and the form of the nonparaxial corrections for Bessel-Gauss beams. We show that, independently from the ratio between the Bessel aperture cone angle and the Gauss beam divergence , the nonparaxial corrections are always very small and therefore negligible. Explicit expressions for the nonparaxial vector electric field components are also reported.

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