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1 May 2012On the propagating and evanescent waves associated to azimuthally-polarized nonparaxial fields
We investigate the contributions of the propagating and the evanescent waves associated to freely-propagating
nonparaxial light beams whose transverse component at some plane is azimuthally polarized. In terms of the plane-wave
angular spectrum of these fields, analytical expressions are given for determining both the spatial shape of the above
components and their relative weight integrated over the whole transverse plane. The results are applied to a kind of
doughnut-like beams with transverse azimuthal polarization.
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Rosario Martínez-Herrero, Pedro M. Mejías, Ignasi Juvells, Artur Carnicer, "On the propagating and evanescent waves associated to azimuthally-polarized nonparaxial fields," Proc. SPIE 8424, Nanophotonics IV, 842424 (1 May 2012); https://doi.org/10.1117/12.921778