title: Ion-exchanged diffractive elements in glass for substrate-mode optics.
abstract: We recently demonstrated the use of continuous-phase ion-exchanged diffractive elements in glass for free-space optics. We extend our design methods to substrate-mode optics, which permits compact packing of miniature-sized free-space optical systems. We designed one-dimensional gratings for equal-intensity 1 ? 3 and 1 ? 5 beam splitting, assuming both planar and conical incidence angles. An experimental demonstration of a 1 ? 3 beam splitter with a uniformity error of 3.4% is presented.
authors.forename: R P
authors.initials: RP
authors.lastname: Salmio
authors.forename: J
authors.initials: J
authors.lastname: Saarinen
authors.forename: E
authors.initials: E
authors.lastname: Noponen