title: Rectangular Luneburg-type lenses for integrated optics.
abstract: Compact Luneburg-type lenses of rectangular outline as viewed from above have been made by thermal evaporation of As2S3 glass onto single-mode LiNbO(3):Ti waveguides through suitably shaped masks and subsequent exposure of the glass to ultraviolet light. The best lenses had speeds of f/5.5 at an aperture of 10 mm and focal spots at reduced aperture about 1.2 times the diffraction-limited size. These lenses have a field of view of at least 25 degrees inside the waveguide.
authors.forename: V E
authors.initials: VE
authors.lastname: Wood
authors.forename: J R
authors.initials: JR
authors.lastname: Busch
authors.forename: D T
authors.initials: DT
authors.lastname: Moore
authors.forename: C B
authors.initials: CB
authors.lastname: Wooley
authors.forename: W H
authors.initials: WH
authors.lastname: Southwell