Formation of polarization singularity lattice through dual-phase modulation

In this paper, we demonstrate the generation of different singularity lattices consisting of only V-points or only C-points using a versatile method based on double phase modulation. Overcoming the inherent problems with interferometry, the proposed approach utilizes a spatial light modulator for modulating the phase distributions of evaluated interference field into the light beams. This concept is used in a single optical set-up to realize different types of lattice fields of C-points and V-points. The proposed set-up not only reduces the complexity and alignment issues but alleviates the need of using a polarization controlling element such as a Q-plate.