Spatial periodicity of photorefractive orientational gratings in dye-dopedpolymer-liquid crystal composite

Authors
Cipparrone, G Mazzulla, A Pagliusi, P
Citation
G. Cipparrone et al., Spatial periodicity of photorefractive orientational gratings in dye-dopedpolymer-liquid crystal composite, OPT COMMUN, 185(1-3), 2000, pp. 171-175
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS COMMUNICATIONS
ISSN journal
00304018 → ACNP
Volume
185
Issue
1-3
Year of publication
2000
Pages
171 - 175
Database
ISI
SICI code
0030-4018(20001101)185:1-3<171:SPOPOG>2.0.ZU;2-N
Abstract
Permanent photorefractive orientational gratings induced in dye-doped polym er dispersed liquid crystal show unusually the same refractive index spatia l periodicity of the interference light pattern. The quadratic response of the material to the local electric field predicts a grating wave vector twi ce of the intensity pattern one. In this paper we propose an explanation of this periodicity and experimental results that support our idea. (C) 2000 Published by Elsevier Science B.V.