Abstract
We report the observation of orientational gratings induced by the photorefractive
effect in dye-doped polymer-dispersed liquid crystals. The photorefractive
origin of the grating-induction effect is supported by the results of two-beam
coupling experiments and by the possibility of erasing the grating by uniform
illumination. For all the samples a stable memory effect was observed.
© 1998 Optical Society of America
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