Volume hologram formation in liquid-crystal/photopolymer mixtures

被引:4
作者
Sutherland, RL [1 ]
Natarajan, LV [1 ]
Tondiglia, VP [1 ]
Bunning, TJ [1 ]
机构
[1] Sci Applicat Int Corp, Dayton, OH 45431 USA
来源
ORGANIC HOLOGRAPHIC MATERIALS AND APPLICATIONS | 2003年 / 5216卷
关键词
photopolymer; volume gratings; holographic polymer-dispersed liquid crystals; diffraction efficiency;
D O I
10.1117/12.504865
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We present a study of the real-time formation of volume holographic reflection gratings in a liquid-crystal/photopolymer mixture. The diffraction efficiency for s- and p-polarization, Bragg wavelength, and laser scattering are monitored as the grating is formed. We present a model of grating formation that incorporates the photophysics of the initiator dye, reaction-diffusion equations of the monomer-polymer-liquid crystal system, phase separation of the liquid crystal, nematic order evolution, and volume shrinkage of the polymer. The model yields good qualitative agreement with experimental data. We discuss the physics of the system as it evolves in time and describe the effects of various phenomena on the diffraction efficiency of holographic polymer-dispersed liquid crystal gratings.
引用
收藏
页码:34 / 43
页数:10
相关论文
共 18 条
[1]   COUPLING OF KINETICS AND VOLUME RELAXATION DURING POLYMERIZATIONS OF MULTIACRYLATES AND MULTIMETHACRYLATES [J].
BOWMAN, CN ;
PEPPAS, NA .
MACROMOLECULES, 1991, 24 (08) :1914-1920
[2]   Holographic polymer-dispersed liquid crystals (H-PDLCs) [J].
Bunning, TJ ;
Natarajan, LV ;
Tondiglia, VP ;
Sutherland, RL .
ANNUAL REVIEW OF MATERIALS SCIENCE, 2000, 30 :83-115
[3]   THE MORPHOLOGY AND PERFORMANCE OF HOLOGRAPHIC TRANSMISSION GRATINGS RECORDED IN POLYMER-DISPERSED LIQUID-CRYSTALS [J].
BUNNING, TJ ;
NATARAJAN, LV ;
TONDIGLIA, V ;
SUTHERLAND, RL ;
VEZIE, DL ;
ADAMS, WW .
POLYMER, 1995, 36 (14) :2699-2708
[4]   Mass transfer processes induced by inhomogeneous photo-polymerisation in a multicomponent medium [J].
Caputo, R ;
Sukhov, AV ;
Tabirian, NV ;
Umeton, C ;
Ushakov, RF .
CHEMICAL PHYSICS, 2001, 271 (03) :323-335
[5]   Efficiency dynamics of diffraction gratings recorded in liquid crystalline composite materials by a UV interference pattern [J].
Caputo, R ;
Sukhov, AV ;
Tabiryan, NV ;
Umeton, C .
CHEMICAL PHYSICS, 1999, 245 (1-3) :463-471
[6]   Quantitative model of volume hologram formation in photopolymers [J].
Colvin, VL ;
Larson, RG ;
Harris, AL ;
Schilling, ML .
JOURNAL OF APPLIED PHYSICS, 1997, 81 (09) :5913-5923
[7]   Dynamical studies of gratings formed in polymer-dispersed liquid crystal films [J].
Fuh, AYG ;
Ko, TC ;
Tsai, MS ;
Huang, CY ;
Chien, LC .
JOURNAL OF APPLIED PHYSICS, 1998, 83 (02) :679-683
[8]   Theoretical simulation of holographic polymer-dispersed liquid-crystal films via pattern photopolymerization-induced phase separation [J].
Kyu, T ;
Nwabunma, D ;
Chiu, HW .
PHYSICAL REVIEW E, 2001, 63 (06)
[9]  
Luck R.M., 1992, EXPANDING MONOMERS S, P1
[10]   Light diffraction at mixed phase and absorption gratings in anisotropic media for arbitrary geometries [J].
Montemezzani, G ;
Zgonik, M .
PHYSICAL REVIEW E, 1997, 55 (01) :1035-1047