Study of thermally induced optical bistability in a twisted nematic liquid crystal |
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Authors: | L Vicari F Bloisi F Simoni |
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Institution: | (1) Dipartimento di Scienze Fisiche, Università di Napoli, Piazzale Tecchio, 80, I-80125 Napoli, Italy |
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Abstract: | We report the observation and study of optical bistability in the power transmitted by a twisted nematic liquid crystal bounded by crossed dichroic polarizers. A detailed study of the dependence of the phenomenon on the sample initial temperature has been performed. The effect is a good test for a simple theoretical model which describes the isotropic droplet formation in a nematic sample under laser illumination. A good agreement is found between experimental results and theoretical predictions. Applications of the effect to realize temperature sensors are envisaged. |
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Keywords: | 42 00 42 65 42 80 |
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