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28 December 1998 Optic and electric characteristics of phase modulators based on nematic liquid crystals
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Proceedings Volume 3684, Laser Optics '98: Nonlinear and Coherent Optics; (1998) https://doi.org/10.1117/12.334839
Event: Laser Optics '98, 1998, St. Petersburg, Russian Federation
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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Igor R. Guralnik, Alexander F. Naumov, and Valentin N. Belopukhov "Optic and electric characteristics of phase modulators based on nematic liquid crystals", Proc. SPIE 3684, Laser Optics '98: Nonlinear and Coherent Optics, (28 December 1998); https://doi.org/10.1117/12.334839
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