title: Preparation of Bragg gratings in sputter-deposited GeO(2)-SiO(2) glasses by excimer-laser irradiation.
abstract: GeO(2) - SiO(2) thin glass films were prepared by the rfsputtering deposition method. Changes in the refractive index of -3% and in the volume of +18% were induced in the film by irradiation with excimer-laser pulses. Bragg gratings a (periodic surface-relief pattern with a sinusoidal wave) have been written in the film by irradiation through a phase mask.
authors.forename: J
authors.initials: J
authors.lastname: Nishii
authors.forename: H
authors.initials: H
authors.lastname: Yamanaka
authors.forename: H
authors.initials: H
authors.lastname: Hosono
authors.forename: H
authors.initials: H
authors.lastname: Kawazoe