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We report the observation of light-induced director reorientation under the application of an electric field in a chiral smectic A liquid crystal owing to the temperature dependence of the electroclinic coefficient. We also demonstrate the occurrence of another light-induced phenomenon that leads to optic axis rotation, whose origin is not yet clear. Finally, we show that thermal indexing cannot be neglected when fitting the experimental data.
© 1995 Optical Society of America
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