Modulator on the base of ferroelectric smectite using faulty total internal reflection

A. L. Andreev*, A. V. Parfenov, E. P. Pozhidaev, V. G. Chigrinov

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

Abstract

The optical radiation modulator based on the effect of total internal reflection (TIR) on the interface of a ferroelectric liquid crystal (FLC) and a glass was investigated. The new modulation scheme on the basis of the electrically controlled light TIR disturbance on the interface between FLC and a glass prism was used. The modulation depth of 0.85 was obtained for the FLC layer optical thickness of 5 μm, the control voltage of 45 v (E=2.5v/μm) and the switching time of 25 μs. The substrate configuration considered provided for the thresholdless switching. The scheme gave the opportunities to use weak electric fields (from 0.1 up to 3 v/μm), to obtain the amplitude modulation without a polaroid at an outlet and to apply electrodes on one of the substrates, which provided for the optical loss decreasing.

Original languageEnglish
Pages (from-to)15-19
Number of pages5
JournalSbornik - Kratkie Soobshcheniya po Fizike AN SSSR
Issue number1-2
Publication statusPublished - Jan 1992

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