Rotating dual-retarders to correct polarization measurement error for division-of-amplitude polarimeter in full field of view

The division-of-amplitude polarimeter (DoAP) can measure the four Stokes parameters simultaneously, and has the advantages of snapshot and high spatial resolution. However, the residual polarization aberration (PA) of DoPA system can lead to the polarization measurement error, which is influenced by the field of view. In this paper, the relationship between the measurement errors of Stokes parameters and the Mueller pupil is derived, and the Mueller pupil of DoPA system is obtained by 3D polarization ray-tracing matrix. Then, a method of dual-retarders rotation is proposed to correct the Mueller pupil in full field of view. The simulation demonstrates the PA correction can improve the measurement accuracy of DoPA system, and the measurement error of degree of linear polarization is reduced by 11.5 %, 38.2 % and 11.8 % at 0°, 10° and 15° field of view, respectively. This research facilitates the precise measurement of polarization signals for polarimeters.