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Nonlinear interaction of oppositely charged vortices generating hollow Gaussian beams

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Abstract

We demonstrate a novel experimental scheme generating high-power, higher-order hollow-Gaussian-Beam (HGB) through annihilation of orbital-angular-momentum of the interacting photons in nonlinear process. Also, report a new and only method for characterizing the order of HGBs.

© 2017 Optical Society of America

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