This article is cited in 1 paper

Specific features of attenuated light transmission by liquid-crystal twist cells in constant and alternating electric fields

E. A. Konshina, L. P. Amosova

St. Petersburg National Research University of Information Technologies, Mechanics and Optics

Abstract: Optical transmission characteristics of dual-frequency nematic liquid crystal (NLC) twist cells with different alignment layers (rubbed polyimide and obliquely deposited cerium dioxide) have been studied in constant and alternating electric fields. It has been established that a change in the optical (twist effect) threshold and dynamic range of attenuated transmission depend both on the boundary conditions (that influence the screening of applied voltage) and on the parameters of the applied electric field. The maximum dynamic range (49.5 dB) has been obtained in the cell with a CeO$_2$ alignment layer controlled by a constant potential. In the case of an alternating electric field, the dynamic range decreases because of reduced effective voltage.

Received: 27.02.2012

 English version: Technical Physics Letters, 2012, 38:7, 642–644

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