This work, lead by Oriol Arteaga from Materials for Energy, Photonics and Catalysis (ENPHOCAMAT) group, presents a new design for an elliptical retarder, based on two quarter-wave retarders with an angle offset, that is particularly well suited for polarimetric measurements based on rotating compensator systems. It is shown that this simple elliptical retarder design offers the minimum condition number achieved by traditionally optimal polarimeter setups and can be used to further improve the accuracy of polarimetric imaging measurements in the presence of error sources.
Optimal elliptical retarder in rotating compensator imaging polarimetry. Gottlieb D., Arteaga O. Optics Letters Vol. 46, Issue 13, pp. 3139-3142 (2021). https://doi.org/10.1364/OL.430266