Composite multi-vortex diffraction-free beams and van Hove singularities in honeycomb lattices

Vassilis Paltoglou, Zhigang Chen, Nikolaos K. Efremidis

We find diffraction-free beams for graphene and MoS${}_2$-type honeycomb optical lattices. The resulting composite solutions have the form of multi-vortices, with spinor topological…