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The vector vortex coronagraph (VVC) performance in the laboratory and inground-based observatories has earned it a spot on the NASA mission conceptsHabEx and LUVOIR. The VVC induces a phase ramp through the manipulation of thepolarization state. Left- and right-circular polarizations get imprinted aphase ramp of opposite signs, which prevents model-based focal plane wavefrontsensing and control strategies in natural light. We thus have to work with apolarization state than ensures circularly polarized light at the VVC mask.However, achieving this polarization state can be non trivial if there areoptics that add phase retardance of any kind between the circular polarizer andthe focal plane mask. Here we present the method currently used at the Caltechhigh contrast spectroscopy testbed (HCST) to achieve the proper circularpolarization state for a VVC, which only uses the deformable mirror andappropriate rotation of the circular polarizer and analyzer optics. At HCST weachieve raw contrast levels of \tentoe~for broadband light with a VVC.

New method to achieve the proper polarization state for a vector vortex coronagraph