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
D. Hermann, L. Komitov, and F. Simoni, "Light-induced director reorientation through the electroclinic effect and optic axis rotation in a chiral smectic A liquid crystal," Opt. Lett. 20, 1116-1118 (1995)