Change in the polarization of laser radiation upon reflection from an anisotropic plate

Valeriy Yatsishen

doi:10.1117/12.2590918

4 May 2021 Change in the polarization of laser radiation upon reflection from an anisotropic plate

Valeriy Yatsishen

Proceedings Volume 11846, Saratov Fall Meeting 2020: Laser Physics, Photonic Technologies, and Molecular Modeling; 118460S (2021) https://doi.org/10.1117/12.2590918
Event: Saratov Fall Meeting 2020, 2020, Saratov, Russian Federation

Abstract

The analysis of the parameters of the polarization of laser radiation upon reflection from a plate of a uniaxial crystal showed that such a plate can convert the polarization of the incident radiation. As the latter, we used circularly polarized laser radiation at a wavelength of λ = 0.64 μm. With a change in the angle of incidence of radiation, the reflected polarization changed from circularly polarized to elliptical. In this case, the tilt angle of the major semiaxis of the polarization ellipse changed from negative to positive values. The direction of rotation of the field vector also changed from right circular to left elliptical, passing through linear polarization. An increase in the thickness of the anisotropic plate intensified the effect of wave interference in it - all changes in the polarization parameters with a change in the angle of incidence of radiation occurred more often than with a thinner plate. The analysis of ellipsometric parameters is carried out when circularly polarized laser radiation is incident on an anisotropic plate and the angular spectra of these parameters are obtained when light is reflected from the plate. The results obtained can be used to design polarization converters based on an anisotropic plate.

Citation Download Citation

Valeriy Yatsishen "Change in the polarization of laser radiation upon reflection from an anisotropic plate", Proc. SPIE 11846, Saratov Fall Meeting 2020: Laser Physics, Photonic Technologies, and Molecular Modeling, 118460S (4 May 2021); https://doi.org/10.1117/12.2590918

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