Single biaxial crystal based polarimeters

We present two optical arrangements for the implementation of polarimeters based on the conical refraction phenomenon, occurring on biaxial crystals (BC). The proposed set-ups keep all the benefits related to BC based polarimeters, but decrease costs and complexity when compared with existing alternatives. Whereas one of the proposals allows us to perform linear polarization metrology, the second proposal is suitable to perform complete polarimetry. The two proposed schemes were optimized, experimentally implemented, and tested by measuring different known input polarizations. The obtained results provide their suitability to be applied for polarization metrology.