title: Orientational gratings in dye-doped polymer-dispersed liquid crystals induced by the photorefractive effect.
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.
authors: Dipartimento di Fisica e Istituto Nazionale per Fisica della Materia, Università della Calabria, 87036 Rende (CS), Italy.
authors: G
authors: G
authors: Cipparrone
authors: A
authors: A
authors: Mazzulla
authors: F
authors: F
authors: Simoni