DEVICE FOR VISUAL DETERMINATION OF THE INTERVAL OF THE PHASE SHIFT OF ELLIPTICALLY POLARIZED RADIATION

摘要

A useful model refers to optical instrumentation. The device for visual determination of the phase shift interval of elliptically polarized radiation comprises a sequentially located parallel radiation source, a polarizer, two phase crystalline plates, an analyzer and a screen mounted perpendicular to the axis of the optical system. The optical axis of the first phase crystalline plate lies in the plane of its entrance face, the optical axis of the second phase crystalline plate is perpendicular to the plane of its entrance facet. The phase crystalline plates have any thickness. The resulting conoscopic picture in the form of a black "Maltese cross" with a rupture in the center in two parts against the background of rings-isochrom with intensity,₁π / 2, 3 / 2π Δ₁2π, and the conoscopic picture in the form of a light "Maltese cross" with two black dots and two short strokes in the center between the branches of the cross against the background of rings-isochrom with an intensity varying in each ring from the maximum to the minimum when passing through the branches of the "Maltese cross" , characterizes elliptically polarized radiation with a phase shift π / 2 Δ₁π, π Δ₁3 / 2π. The technical result consists in ensuring the accuracy of determining the total phase shift interval of elliptically polarized radiation, including the areas of its transition into linearly or circularly polarized radiation. 2 yl.