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vol 63 / July, 2020
Article

DOI 10.17586/0021-3454-2019-62-8-717-728

UDC 520.85:535.4

STUDY OF PHASE PLATES ERRORS IN A STOKES POLARIMETER

D. E. Kukushkin
ITMO University, Faculty of Applied Optics;


A. V. Bakholdin
ITMO University, Department of Applied and Computer Optics; Head of the Department


V. D. Bychkov
Special Astrophysical Observatory of the RAS, Laboratory of Stellar Physics;


G. G. Valyavin
Crimean Astrophysical Observatory of the RAS; Special Astrophysical Observatory of the RAS, Laboratory of Stellar Physics;


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Abstract. An optical schematic of the Stokes polarimeter developed for the high spectral resolution spectro-graph of Large Telescope Azimuthal is presented. The passport errors of the phase plates used in the polarimeter are given. A model of the phase plates operation based on Muller matrices is described and discussed. A comparison of the model with the results of measurements of the fabricated phase plates is carried out. The instrument polarization of the manufactured phase plates is estimated. Произведена оценка инструментальной поляризации фазовых пластин. As a result of numerical simulation, the er-rors of the Stokes parameters measurements are obtained.
Keywords: Stokes polarimeter, instrumental polarization, phase plates, polarization optics

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