Polarization characteristics of thin layer of nematic liquid crystal at different temperatures

A. D. Arkhelyuk; L. I. Podkamen

doi:10.1117/12.683346

14 June 2006 Polarization characteristics of thin layer of nematic liquid crystal at different temperatures

A. D. Arkhelyuk, L. I. Podkamen

Proceedings Volume 6254, Seventh International Conference on Correlation Optics; 625413 (2006) https://doi.org/10.1117/12.683346
Event: Seventh International Conference on Correlation Optics, 2005, Chernivsti, Ukraine

Abstract

The regularities of polarized light scattering by thin layer of nematic liquid crystal (NLC) at different temperatures including frozen state are presented in this work. The direct extinction matrix and matrix of diffusion light scattering of NLC are measured. The symmetry character of given matrixes is defined. It is shown, that both structure and regularities of angular course of nonzero components change depending on orientation angle of NLC director for both matrixes. Most dynamic changes are registered for the angular course of f ₁₂ (f ₂₁) and f ₂₃ ( f ₃₂ )components in the range of large scattering angles, especially when angle of director orientation with respect to the probing beam direction is equal to 45° . For the investigation of different states of NLC director orientation the method of it change in controllable electric field was used. A qualitative relationship between f ₄₄ , f ₃₃ , f ₁₂ f ₂₁ , f ₂₃ (f ₃₂) values and orientation angle of NLC director is defined during the analysis of experimental results.

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A. D. Arkhelyuk and L. I. Podkamen "Polarization characteristics of thin layer of nematic liquid crystal at different temperatures", Proc. SPIE 6254, Seventh International Conference on Correlation Optics, 625413 (14 June 2006); https://doi.org/10.1117/12.683346

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KEYWORDS

Liquid crystals

Polarization

Light scattering

Scattering

Anisotropy

Mineralogy

Optical testing

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