Demonstration of pseudospin-dependent topological charge transformation in photonic graphene

Daohong Song,Xiuying Liu,Shiqi Xia,Zhixuan Dai,Liqin Tang,Jingjun Xu,Zhigang Chen

conference on lasers and electro optics（2018）

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摘要

Momentum-matched selective excitation of two sublattices with vortex beams leads to direct observation of pseudospin-dependent conical diffraction and topological charge transformation, including spin-orbital angular momentum conversion arising from inherent degree-of-freedom in photonic graphene.

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关键词

(080.1238) Array waveguide devices,(050.4865) Optical vortices,(190.4420) transverse effects in

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