Reorientation of chromophores in dispersive photorefractive polymers

被引：13

作者：

Binks, DJ ^{[1
]}

Khand, K

West, DP

机构：

[1] Univ Manchester, Dept Phys & Astron, Laser Photon Res Grp, Manchester M13 9PL, Lancs, England

[2] Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2001年 / 18卷 / 03期

关键词：

D O I：

10.1364/JOSAB.18.000308

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The reorientational dynamics of chromophores in a photorefractive polymer composite are characterized by use of a new, analytical, nonexponential expression. A single material parameter, the diffusion constant, is used to describe reorientation in the material. The effect of plasticization on the diffusion constant is studied. The relationship between space-charge field growth and the biexponential fit to holographic growth is investigated. For typical parameters the exponential space-charge field's rise time may be as much as 10 times less than the holographic growth time constant obtained conventionally. (C) 2001 Optical Society of America.

引用

页码：308 / 312

页数：5

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