Holographic Performance of Fluorinated Acrylate Photopolymer

doi:10.7517/j.issn.1674-0475.2009.02.103

Abstract

Abstract: By enhancing the diffusion of monomer,and by increasing the difference of refractive index between the recording monomer and the binder resin,modulation of refractive index of photopolymer for holographic recording will be greatly realized.Hyperbranched polyester (refractive index 1.586),with the loosely packing molecular structure that makes the monomer transport easily,and fluorine-containing acrylate (refractive index 1.372) combining with highly reactive diacrylate (refractive index 1.457) were used in this work as the binders and monomer,respectively,of photopolymer for holographic recording.The effects of composition and film thickness on diffraction efficiency of holographic recording were studied,as well as the characteristic space resolution and refractive-index modulation of the new holographic recording material.The photopolymer exhibited excellent performance of holographic recording with modulation of refractive index about 4.82×10^-3,photosensitivity 56 mJ/cm²,diffraction efficiency up to 99.4%,and 85.6% even at resolution as high as to 3754 lp/mm.

Key words: photopolymer, hyperbranched polyester, holographic material

CLC Number:

LI Fang, ZHU Zong-wen, WANG Yue-chuan. Holographic Performance of Fluorinated Acrylate Photopolymer[J]. Imaging Science and Photochemistry, 2009, 27(2): 103-110.

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