 - Variable spiral plate (VSP) for vortex beam generation- Manufacturer: Vortex
 - Linear entrance can be transformed in all kinds of Polarization distributions Planar wave with circular Polarization is transformed in a helical wave Alignment of the liquid crystal within a Spiral-plate with top... Neuchâtel, Switzerland
 - Radial-Polarization converter- Manufacturer: ARCoptix S.A
 - The Radial Polarization converter (RPC)from ARCoptix is a worldwide unique device that converts a conventional linearly polarized beam into a beam that has a CONTINUOUS radial or azimuthal Polarization distributi... Neuchâtel, Switzerland

