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We present a scheme for active compensation of complex extrinsic polarizationperturbations introduced into an optical system. Imaging polarimeter is used tomeasure the polarization state across a beam profile and a liquid crystalspatial light modulator controls the polarization of the input beam. A sequenceof measurements permits determination of the birefringence properties of aperturbing specimen. The necessary correction is calculated and fed back to thepolarization modulator to compensate for the polarization perturbation. Thesystem capabilities are demonstrated on a range of birefringent specimens.

Active compensation of extrinsic polarization errors using adaptive optics