Dynamics of grating formation in photorefractive sol-gel composites

被引：9

作者：

Choi, DH ^{[1
]}

Hong, HT ^{[1
]}

Jun, WG ^{[1
]}

Oh, KY ^{[1
]}

机构：

[1] Kyung Hee Univ, Coll Environm & Appl Chem, Mat Res Ctr Informat Display, Inst Nat Sci, Yongin 449701, Kyungki, South Korea

来源：

OPTICAL MATERIALS | 2003年 / 21卷 / 1-3期

关键词：

photorefractive composite; sol-gel; diffraction efficiency; holographic grating formation;

D O I：

10.1016/S0925-3467(02)00170-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We prepared the photorefractive composite based on organic-inorganic hybrid materials containing a charge transporting molecules, second-order nonlinear optical chromophore, photosensitizer, and plasticizer either as a side chain unit or a guest molecule. Carbazole group and 2-{4-[(2-hydroxy-ethyl)-methyl-amino]-benzylidene}-malononitrile were reacted to isocyanatotriethoxysilane to provide the functional precursor molecules. 2,4,7-Trinitrofluorenone was added into the sol-gel materials to induce a charge transfer complex. We also could select the plasticizer that is well miscible with the matrix molecules. Strong hydrogen bond between the molecules was quite effective to control the optical quality of the resultant matrix. We also compared the dynamic properties of the diffraction efficiency in the sol-gel sample with the change of the concentration of each component. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：373 / 377

页数：5

共 14 条

[1] Synthesis and relationships between the nonlinear optical and holographic properties of dual functional azocarbazole chromophores based on photorefractive polymers [J].