Open AccessHolographic kinetics for mixed volume gratings in gold nanoparticles doped photopolymer
Author(s) -
Chengmingyue Li,
Liangcai Cao,
Qingsheng He,
Guofan Jin
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.005017
Subject(s) - materials science , grating , optics , absorption (acoustics) , diffusion , diffraction efficiency , refractive index , colloidal gold , diffraction grating , holography , doping , nanoparticle , optoelectronics , nanotechnology , composite material , physics , thermodynamics
A holographic kinetic model is proposed to quantitatively represent the dynamics of mixed volume gratings in a bulk gold nanoparticles (NPs) doped photopolymer. Due to the polymerization-driven multicomponent diffusion, the volume refractive index grating is induced by the periodic spatial distribution of photoproduct while the absorption grating is formed by the periodic spatial distribution of gold NPs. By simulating this model with the characterization of time varying absorption modulation, it is capable to describe the behavior of gold NPs in both the polymerization and the multicomponent diffusion process. The temporal evolution of refractive index modulation and absorption modulation can be extracted, respectively, from a diffraction efficiency curve by fitting the model. The established model could be an effective method for understanding the photophysical and photochemical mechanism of holographic nanocomposite.