G. Cipparrone et al., ORIENTATIONAL GRATINGS IN DYE-DOPED POLYMER-DISPERSED LIQUID-CRYSTALSINDUCED BY THE PHOTOREFRACTIVE EFFECT, Optics letters, 23(19), 1998, pp. 1505-1507
We report the observation of orientational gratings induced by the pho
torefractive effect in dye-doped polymer-dispersed liquid crystals. Th
e 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. (C) 1998 Optical Society of Americ
a.