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Gaussian beams with optical vortex of charge 2- and 3-diffraction by a half-plane and slit.

Masajda J.

Optica Applicata

2000

Vol. 30, nr 2-3

247-256

In the paper, the half-plane diffraction of the Gaussian light beam containing double and triple optical vortex is examined. The analysis is based on the scalar theory of diffraction in the Fresnel-Kirchhoff approximation. Special attention is paid to the dynamics of the optical vortex within the diffracted beam. Some results for the case of diffraction by a single slit are also presented.