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Technical Physics Letters

, Volume 35, Issue 6, pp 498–500 | Cite as

Influence of the alignment layer and the liquid crystal layer thickness on the characteristics of electrically controlled optical modulators

  • V. N. Vasil’ev
  • E. A. Konshina
  • D. S. Kostomarov
  • M. A. Fedorov
  • L. P. Amosova
  • E. O. Gavrish
Article

Abstract

The screening effect of the amorphous hydrogenated carbon (a-C:H) alignment layer and its dependence on the thickness of a dual-frequency nematic liquid crystal (NLC) layer have been studied. Optimization of the a-C:H layer thickness allows a threshold voltage for the optical S-effect to be reduced and the characteristic switching time and relaxation time of 0.5 and 2.5 ms, respectively, to be obtained for a phase retardation of 2π at a wavelength of 0.86 μm.

PACS numbers

77.84.Nh 78.20.Fm 78.20.Jg 

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References

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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • V. N. Vasil’ev
    • 1
  • E. A. Konshina
    • 1
  • D. S. Kostomarov
    • 1
  • M. A. Fedorov
    • 1
  • L. P. Amosova
    • 1
  • E. O. Gavrish
    • 1
  1. 1.St. Petersburg State University of Information Technologies, Mechanics, and OpticsSt. PetersburgRussia

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