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Phys Rev Lett. 2012 Feb 24;108(8):087801. Epub 2012 Feb 23.

Tunable optical vortex arrays from a single nematic topological defect.

Author information

1
Université Bordeaux, LOMA, UMR 5798, F-33400 Talence, France. e.brasselet@loma.u-bordeaux1.fr

Abstract

We report on the generation of tunable structured light fields endowed with various sets of phase singularities from a single topological defect in a nematic liquid crystal mesophase. The experimental demonstration relies on the use of electric field-induced nonsingular topological defects called "umbilics."

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