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Quasimonochromatic optical vortices

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2 Author(s)
Volyar, A.V. ; Nat. Tavrida V. Vernandsky Univ., Crimea ; Egorov, Yu.A.

The propagation of a circularly polarized singular beam through a single-axis crystal is accompanied by the appearance of additional singularities in the polarization structure of the beam field. These vector singularities combine to form concentric umbilic lines-degenerate umbilic point of the star type, thus significantly changing the entire structure of the field. When the beam passes though a birefringent quarter-wave plate and a polarizer, the vector singularities transform into the usual optical vortices. Rotation of the polarizer and/or of the quarter-wave plate drives the vortices to move by preset trajectories, merge with one another, or break into elementary singularities

Published in:

Advanced Optoelectronics and Lasers, 2003. Proceedings of CAOL 2003. First International Conference on  (Volume:2 )

Date of Conference:

16-20 Sept. 2003

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