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Conferences > CLEO_QELS > 2015 > FTh3D > FTh3D.6

Asymmetric conical diffraction and generation of non-integer phase singularities in photonic graphene

Daohong Song, Sheng Liu, Vassilis Paltoglou, Daniel Gallardo, Liqin Tang, Jingjun Xu, Nikolaos K. Efremidis, and Zhigang Chen

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Abstract

We demonstrate asymmetric conical diffraction accompanied by pseudospin-mediated non-integer phase singularities when two sublattices of photonic graphene are equally excited near the Dirac points. Experimental and numerical results agree with analysis of the Dirac equation.

© 2015 Optical Society of America

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