Mueller Matrix Polarimeter with Diattenuation Error Calibration Approach

A calibration algorithm for the Mueller matrix dual-rotating retarder polarimeter is presented. The Mueller matrix dual-rotating retarder polarimeter is composed by two rotating retarders and two fixed polarizers with the final purpose of retrieving the polarization properties of a sample. Even algorithms to calibrate the retardation error and azimuthal error already exists, the accuracy obtained with the system is limited. Our proposal is to take into account the diattenuation error of the two retarders, which can provide more accuracy in the result. The analytical equations is described and supported with experimental results showing the accuracy incremental in our proposal.