title: Effect of incorporation of different modified Al2O3 nanoparticles on holographic characteristics of PVA/AA photopolymer composites.
abstract: Al2O3 nanoparticles modified with different chemical reagents, prepared by using three chemical dispersants [high definition (HD), sodium dodecyl benzene sulfonate, and cetyl trimethyl ammonium chloride], were doped into photopolymer films in a polyvinyl alcohol/acrylamide (PVA/AA) system, respectively. A 647 nm Ar-Kr laser was used to expose and study the holographic properties of the samples. The research shows that doping Al2O3 nanoparticles into PVA/AA photopolymer film leads to different levels of improvement of the holographic characteristics. The diffraction efficiency of the sample can be raised to 93.8%, the maximum refractive index modulation increased to 2.28×10(-3), the shrinkage can be depressed to 0.8%, and the Bragg mismatch is 0.04°, while the concentration of 10 nm Al2O3 nanoparticles modified by HD dispersant is 1.02×10(-3)  mol·L(-1).
authors.forename: Yunxi
authors.initials: Y
authors.lastname: Li
authors.forename: Chunhui
authors.initials: C
authors.lastname: Wang
authors.forename: Hailong
authors.initials: H
authors.lastname: Li
authors.forename: Xiaoyi
authors.initials: X
authors.lastname: Wang
authors.forename: Junhe
authors.initials: J
authors.lastname: Han
authors.forename: Mingju
authors.initials: M
authors.lastname: Huang