title: Compact beam expander with linear gratings.
abstract: Novel compact beam expanders that could be useful for applications such as providing light to flat panel displays are presented. They are based on a planar configuration in which three spatially linear gratings are recorded on one transparent substrate, so as to expand a narrow incoming beam in two dimensions. We present the design and recording procedures along with results, showing a relatively uniform intensity of the wide output beam. Such expanders can serve for illuminating flat panel displays.
authors.affiliation: Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, Israel. ferevita@wisemail.weizmann.ac.il
authors.forename: Revital
authors.initials: R
authors.lastname: Shechter
authors.forename: Yaakov
authors.initials: Y
authors.lastname: Amitai
authors.forename: Asher A
authors.initials: AA
authors.lastname: Friesem
mesh_terms: D008962:Models, Theoretical; D055095:Optics and Photonics