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Appl Opt. 2005 May 20;44(15):2989-95.

Experimental study of phase-step broadening by fringing fields in a three-electrode liquid-crystal cell.

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  • 1Ben Gurion University, Beer-Sheva 84105, Israel.


The fringing-field broadening of a phase-step profile and its dependence on the thickness of a liquid-crystal (LC) cell were studied in a simple, three-electrode LC cell structure consisting of two lateral electrodes biased with a differential voltage and a third, grounded, electrode placed on the opposite substrate. The results were compared both with an approximate analytical model developed earlier for a fringe-field-broadening kernel and with computer simulations. Good agreement between the experiment and the theoretical as well as the simulation results is shown.

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