Abstract
The propagation of spectral Stokes singularities (vortices) of stochastic electromagnetic vortex beams through atmospheric turbulence is studied, where the electromagnetic Gaussian Schell-model (GSM) vortex beam is taken as an illustrative example. It is shown that the spectral Stokes vortices S 12 (C-points), S 23 and S 31 introduced to describe the polarization singularities of stochastic electromagnetic beams appear in turbulence. The motion, creation, annihilation and polarization changes of S 12, S 23 and S 31 vortices, as well as the handedness inversion of S 12 vortices may appear as the propagation distance or one beam parameter varies. In the process the topological relationship holds true. In comparison with the free-space propagation, the variation of the refractive index structure constant \(C_{n}^{2}\) in atmospheric turbulence results in similar effects as above. The dependence of S 12, S 23 and S 31 vortices on the propagation distance and beam and turbulence parameters are illustrated by numerical examples.
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Yan, H., Lü, B. Propagation of spectral Stokes singularities of stochastic electromagnetic beams through atmospheric turbulence. Appl. Phys. B 99, 809–815 (2010). https://doi.org/10.1007/s00340-009-3892-2
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DOI: https://doi.org/10.1007/s00340-009-3892-2