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Optics and Spectroscopy

, Volume 119, Issue 6, pp 1052–1055 | Cite as

Determination of the director pretilt angle at liquid-crystal layer boundaries by polarimetric and crystal rotation methods in the same cell

  • A. A. Karetnikov
  • L. P. Amosova
  • D. A. Vakulin
  • N. A. Karetnikov
  • A. P. Kovshik
  • I. P. Kolomiets
  • E. I. Ryumtsev
Geometry and Applied Optics

Abstract

The pretilt angle of the director at the liquid crystal–glass interface is determined with the polarimetric and crystal rotation methods. The polarimetric method has been modified with the aim of increasing the measurement accuracy. The results obtained with the modified polarimetric method are verified with the use of reference plane-parallel iceland spar plates with known pretilt angles of the optical axes. It is shown that the pretilt angles found with the crystal rotation and modified polarimetric methods coincide within the measurement accuracy.

Keywords

Extraordinary Wave Glass Prism Polarization Azimuth Cell Rotation Pretilt Angle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • A. A. Karetnikov
    • 1
  • L. P. Amosova
    • 2
  • D. A. Vakulin
    • 2
  • N. A. Karetnikov
    • 1
  • A. P. Kovshik
    • 1
  • I. P. Kolomiets
    • 1
  • E. I. Ryumtsev
    • 1
  1. 1.St. Petersburg State UniversitySt. PetersburgRussia
  2. 2.ITMO UniversitySt. PetersburgRussia

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