title: Guided-wave optical thin-film Luneburg lenses: fabrication technique and properties.
abstract: With computer-aided design and a digital-controlled lathe, shadow sputtering masks have been made with precisely tailored contour for the fabrication of guided-wave optical thin-film Luneburg lenses. Nearly diffraction-limited performance has been obtained reproducibly for a family of thin-film circular lenses ranging between F/4 and F/30 derived from generalized thin-film Luneburg lens profiles when only the center portion of the lens aperture is employed, in good agreement with numerical ray-tracing results. Both the design and construction of the mask and the analytical as well as experimental results of the thin-film generalized Luneburg lenses are reported. In addition, the fabrication tolerance for this guided-wave optical lens system is described.
authors.forename: S K
authors.initials: SK
authors.lastname: Yao
authors.forename: D B
authors.initials: DB
authors.lastname: Anderson
authors.forename: R R
authors.initials: RR
authors.lastname: August
authors.forename: B R
authors.initials: BR
authors.lastname: Youmans
authors.forename: C M
authors.initials: CM
authors.lastname: Oania