Generation of Vector Beam by a Sagnac-Like Interferometer

Vector beam is a fully polarized beam, but has spatially different polarization distribution. It can be used in many applications, e.g., microscopy illumination. Following the idea of T. Wang et al., Appl. Phys. B 122:231 (2016), this use case demonstrates a Sagnac-interferometer scheme to generate a vector beam. This setup contains an SLM of spiral phase, a polarization beam splitter, and a quarter-wave plate.