Two-way diffusion model for short-exposure holographic grating formation in acrylamide-based photopolymer

被引：51

作者：

Babeva, Tsvetanka ^{[1
,2
]}

Naydenova, Izabela ^{[1
,3
]}

Mackey, Dana ^{[1
,4
]}

Martin, Suzanne ^{[1
,3
]}

Toal, Vincent ^{[1
,3
]}

机构：

[1] Dublin Inst Technol, Ctr Ind & Engn Opt, Dublin 8, Ireland

[2] Bulgarian Acad Sci, Cent Lab Photoproc, BU-1113 Sofia, Bulgaria

[3] Dublin Inst Technol, Sch Phys, Dublin 8, Ireland

[4] Dublin Inst Technol, Sch Math Sci, Dublin 8, Ireland

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2010年 / 27卷 / 02期

基金：

爱尔兰科学基金会;

关键词：

D O I：

10.1364/JOSAB.27.000197

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A theoretical model for formation of a short-exposure holographic grating is presented. The model accounts for both monomer and polymer diffusion and distinguishes between short polymer chains capable of diffusing and long polymer chains that are immobile. It is shown that the experimentally observed decrease of diffraction efficiency at higher spatial frequency can be predicted by assuming diffusion of short-chain polymers away from the bright fringes. The time evolution of the refractive-index modulation after a short exposure is calculated and compared with experimental results. The effects of diffusion coefficients, polymerization rates, intensity, and spatial frequency of recording on the properties of weak diffraction gratings are investigated by numerical simulations. (C) 2010 Optical Society of America

引用

页码：197 / 203

页数：7

共 29 条

[1]

[Anonymous], P SPIE

[2] Recording of holographic diffraction gratings in photopolymers: theoretical modelling and real-time monitoring of grating growth [J].