title: Codeposition of continuous composition rugate filters.
abstract: Rugate filters are optical thin film interference structures with sinusoidal refractive index profiles. Two-wavelength reflection filters have been fabricated by codeposition of SiO(2) and TiO(2). Composition modulation was monitored and controlled using quartz crystal rate controllers. The resulting filters exhibited two well-defined stopbands. Microscopic examination revealed that the structure is glasslike without pronounced thin film microstructure.
authors.forename: W J
authors.initials: WJ
authors.lastname: Gunning
authors.forename: R L
authors.initials: RL
authors.lastname: Hall
authors.forename: F J
authors.initials: FJ
authors.lastname: Woodberry
authors.forename: W H
authors.initials: WH
authors.lastname: Southwell
authors.forename: N S
authors.initials: NS
authors.lastname: Gluck