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Proceedings Paper

Optic and electric characteristics of phase modulators based on nematic liquid crystals
Author(s): Igor R. Guralnik; Alexander F. Naumov; Valentin N. Belopukhov
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Paper Abstract

We used a combined approach, investigating capacitance, resistance, and electrooptic reply of nematic liquid crystals within the same experimental framework, which enabled us to plot the phase delay as a function of electric parameters. Phase delay vs. capacitance curves are almost linear, but the slope is frequency dependent for the liquid crystal with the low-frequency dispersion of the dielectric anisotropy. To interpret the results, equivalent electric parameters definition, consistent with the AC current measurement techniques, is presented and phenomenological theory of the RC-parameters is developed. When completed by the Ericksen-Leslie equation for the liquid crystal molecules realignment in the external electric field, the theory is in good agreement with the experiment.

Paper Details

Date Published: 28 December 1998
PDF: 6 pages
Proc. SPIE 3684, Laser Optics '98: Nonlinear and Coherent Optics, (28 December 1998); doi: 10.1117/12.334839
Show Author Affiliations
Igor R. Guralnik, Samara State Univ. (Russia)
Alexander F. Naumov, P.N. Lebedev Physical Institute (United States)
Valentin N. Belopukhov, P.N. Lebedev Physical Institute (Russia)

Published in SPIE Proceedings Vol. 3684:
Laser Optics '98: Nonlinear and Coherent Optics
Vladimir E. Sherstobitov, Editor(s)

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