Abstract
Abstract An optical vortices beam with a helical phase term shows a new degree of freedom, namely orbital angular momentum (OAM). Here, we generate three-dimensional (3D) photonic lattices which have vortex array structures. We use the spatial light modulator (SLM) to produce two sets of non-diffracting lattice light fields and superpose the two lattice light fields together. The rotation angle and size of the two light fields are variable when we generate the superposition lattice light fields. This design to generate photonic lattice light is neoteric and easy operation. Furthermore, the new photonic lattice is not only in good periodicity but also has the vortex array structures. We have carried out numerical simulation results and experimental results on these new types of 3D lattices, and made an in-depth discussion on their optical field properties and structural characteristics.
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