Abstract
The light field at the output of the Mach–Zehnder interferometer, where one of its arms contains a birefringent sample and a rotating polarizer is placed at the output, has been investigated both theoretically and experimentally. Initially unpolarized light, after passing through the interferometer, becomes partially polarized and carries information about the sample points with equal sums of principal stresses, forming the isopachic field. Depending on the relative path difference at the considered point in the output light field, the degree of polarization varies from 0 to 1. Analyzing this phenomenon allows us to establish the relationship between the intensity of the outgoing light and the azimuth of the rotating polarizer, thereby enabling the determination of the directions of the main optical axes at each point of the birefringent sample, known as the isoclinic field.
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This study was in part supported by the Russian Science Foundation no. 20-71-10103.
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Kesaev, V.V., Lobanov, A.N. & Ambrozevich, S.A. Investigation of Partially Polarized Isopachics Using a Rotating Polarizer. Bull. Lebedev Phys. Inst. 50, 285–289 (2023). https://doi.org/10.3103/S1068335623070060
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DOI: https://doi.org/10.3103/S1068335623070060