posted on 2023-01-10, 03:25authored byDavid Marco, Miguel A. Alonso
We present simple mathematical solutions for optical fields that span all nonparaxial polarization ellipses. These fields, given by a superposition of five plane waves with non-coplanar polarizations, are experimentally realizable. By slowly varying in time the relative amplitude between two groups of plane waves, the resulting fields take the form of a periodic polarization lattice, where all possible nonparaxial polarization ellipses are localized in a 4D spatio-temporal cell. The field distributions in these cells can be regarded as 4D skyrmionic textures.
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