Abstract
We report a theoretical investigation of the spatial self-phase modulation (SSPM) effect and nonlinear ellipse rotation of both hybridly polarized vector beams and elliptically polarized vector beams through isotropic Kerr nonlinearities. It is demonstrated that the SSPM intensity pattern, the distribution of state of polarization, and the spin angular momentum (SAM) flux of a hybridly polarized vector beam could be manipulated by tuning the magnitude of the isotropic optical nonlinearity. Interestingly, we observed the radial-variant nonlinear ellipse rotation of elliptically polarized vector beams through isotropic Kerr nonlinearities. Our results may find interesting applications in nonlinear mechanism analysis, nonlinear characterization technique, and SAM manipulation.
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