title: Optimization of holographic storage with modulated recording beams in a thick polyvinyl alcohol/acrylamide photopolymer.
abstract: In a holographic photopolymer system, the storage properties were often limited due to the attenuation in depth of light during the recording step. To obtain smaller values of the depth attenuation profiles in 1 mm thick polyvinyl alcohol/acrylamide (PVA/acrylamide) photopolymers, we used a triangle prism, sitting one face tilted at 13.7 degrees to the axis within the focus of a lens, to modulate the distribution of recording beams. Doing this permitted larger refractive index modulation depth to be achieved, and larger dynamic range (M#=9.2) was obtained in the PVA/acrylamide photopolymers.
authors.affiliation: Institute of Optoelectronic and Composite Materials, School of Physics and Engineering, Sun Yat-sen University, Guangzhou, China.
authors.forename: FuRi
authors.initials: F
authors.lastname: Ling
authors.forename: BiHai
authors.initials: B
authors.lastname: Tong
authors.forename: ShaoJi
authors.initials: S
authors.lastname: Jiang
authors.forename: Biao
authors.initials: B
authors.lastname: Wang
authors.forename: YueLi
authors.initials: Y
authors.lastname: Zhang