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Journal of Optical Technology

| SIMULTANEOUS RUSSIAN-ENGLISH PUBLICATION

  • Vol. 74, Iss. 10 — Oct. 1, 2007
  • pp: 720–722

Phase modulation of light in a two-frequency nematic liquid crystal

E. A. Konshina and D. S. Kostomarov  »View Author Affiliations


Journal of Optical Technology, Vol. 74, Issue 10, pp. 720-722 (2007)
http://dx.doi.org/10.1364/JOT.74.000720


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Abstract

This paper presents original studies of the phase modulation of light by nematic liquid crystals (NLCs) with a sign change of the dielectric anisotropy (Δε) as a function of the frequency of the supplied sinusoidal voltage. The voltage dependences of the phase lag are obtained for a number of frequencies. The threshold voltage of the S effect is experimentally determined, and its frequency dependences are found to have a characteristic maximum that corresponds to the critical frequency at which the sign of Δepsi of the NLC mixture changes. It is shown that, in the frequency interval 100-5000 Hz where Δε>0, the phase lag and the threshold voltage are independent of the frequency of the supplied voltage, but they are affected by the conditions of the anisotropic-elastic interphase interaction associated with the orienting surface.

© 2007 Optical Society of America

Citation
E. A. Konshina and D. S. Kostomarov, "Phase modulation of light in a two-frequency nematic liquid crystal," J. Opt. Technol. 74, 720-722 (2007)
http://www.opticsinfobase.org/jot/abstract.cfm?URI=jot-74-10-720


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References

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