title: Multistep ion exchange processes of gradient refractive index rod lens.
abstract: A mathematical model for research on the refractive index profile (RIP) of multistep ion exchange processes (IEPs) of gradient refractive index rod lenses (GRINs) is established by the different initial condition and boundary condition, based on the Fickian diffusion equation. GRIN rod lenses have been fabricated using the three-step IEPs. Research results indicate that the experimental deviations of refractive index (DRI) are in good agreement with the theoretical data. The DRI of three-step IEPs is superior to the one- and two-step IEPs and smaller than 10(-5).
authors.affiliation: Department of Physics, Xiaogan University, Xiaogan 432000, China. kuerlvhao@yahoo.com.cn
authors.forename: Hao
authors.initials: H
authors.lastname: Lv
authors.forename: Aimei
authors.initials: A
authors.lastname: Liu
authors.forename: Jufang
authors.initials: J
authors.lastname: Tong
authors.forename: Xunong
authors.initials: X
authors.lastname: Yi
authors.forename: Qianguang
authors.initials: Q
authors.lastname: Li
authors.forename: Xinmin
authors.initials: X
authors.lastname: Wang
authors.forename: Yaoming
authors.initials: Y
authors.lastname: Ding