A detailed study of the light-induced gratings in Methyl-Red-doped 4-n-pentyl-4'-cyanobiphenyl (5CB) homeotropically aligned is reported. In particular, the dependence of diffraction efficiency upon the pump and probe polarizations has been investigated both for transient and permanent gratings. Our results confirm the earlier observations on the role of light-induced adsorption of MR molecules on the cell boundaries and demonstrate the common origin of the supranonlinear response and the permanent recording effect.
Light-induced adsorption and desorption in dynamic and stable grating formation in methyl-red doped liquid crystals / Lucchetti, Liana; M., DI FABRIZIO; Francescangeli, Oriano; Simoni, Francesco. - In: JOURNAL OF NONLINEAR OPTICAL PHYSICS AND MATERIALS. - ISSN 0218-8635. - 11:(2002), pp. 13-23. [10.1142/S0218863502000912]
Light-induced adsorption and desorption in dynamic and stable grating formation in methyl-red doped liquid crystals
LUCCHETTI, Liana;FRANCESCANGELI, ORIANO;SIMONI, Francesco
2002-01-01
Abstract
A detailed study of the light-induced gratings in Methyl-Red-doped 4-n-pentyl-4'-cyanobiphenyl (5CB) homeotropically aligned is reported. In particular, the dependence of diffraction efficiency upon the pump and probe polarizations has been investigated both for transient and permanent gratings. Our results confirm the earlier observations on the role of light-induced adsorption of MR molecules on the cell boundaries and demonstrate the common origin of the supranonlinear response and the permanent recording effect.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
