Abstract

We have measured the Stokes parameters of the He–Ne laser radiation (λ = 0.63 μm) reflected at angles of incidence from 5 to 70° by glass‐reinforced plastic based on a silicon‐organic polymer binder before and after its heating to 1200 K by CO2 laser radiation. The probe radiation from the He–Ne laser is linearly polarized parallel or perpendicular to the incidence plane. It is shown that the flux reflected in the mirror direction by samples illuminated at a Brewster angle (θ ∼ 56°) by He–Ne laser radiation linearly polarized in the plane of incidence contains a component with elliptical polarization.

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