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 language | English |
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| Pages (from-to) | 15-19 |
| Number of pages | 5 |
| Journal | Sbornik - Kratkie Soobshcheniya po Fizike AN SSSR |
| Issue number | 1-2 |
| Publication status | Published - Jan 1992 |