Vector Beam Generation

The vector beam is a beam that is fully polarized but shows different polarization states in different local positions on one detector plane. More specifically, if a polarizer is put after a vector beam, different energy density distributions will be recorded as the polarizer is rotated. Vector beams are widely utilized in many applications such as microscopy imaging or laser manipulation.  Using an interferometer with a vortex-phase spatial light modulator (SLM) and wave plates a vector beam can be generated. However, the modeling of the generation process needs precise handling of the vectorial behavior and diffraction of the electromagnetic fields. VirtualLab Fusion, a fast physical optics software platform, is the perfect choice to model such beams. In VirtualLab Fusion,  the electromagnetic field propagation through an arbitrary system can be calculated as polarization and diffraction phenomena are automatically handled.

Generation of Vector Beam by a Sagnac-Like Interferometer

Following the idea of T. Wang et al., Appl. Phys. B 122:231 (2016), this use case demonstrates a Sagnac-interferometer scheme to generate vector beam.

Vector Beam Generation with a SLM and a Common-Path Interferometer

An interferometric setup is built up with SLM, apertures, quarter-wave plates, and grating, in a 4f lens system. Using this setup, we demonstrate the generation of cylindrical vector beams.

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