title: Far field of gratings with rough strips.
abstract: In this work, we analyze the far-field pattern produced by a grating made of strips with two different random roughness levels. The efficiency and shape of the diffraction orders is obtained, which are shown to depend on the statistical properties of roughness. We assume for the calculations that the grating can be used in a mobile mechanical system. A preliminary experimental approach which partially corroborates the theoretical results is also performed.
authors.affiliation: Optics Department, Universidad Complutense de Madrid, Ciudad Universitaria, Madrid, Spain. sanchezbrea@fis.ucm.es
authors.forename: Luis Miguel
authors.initials: LM
authors.lastname: Sanchez-Brea
authors.forename: Francisco Jose
authors.initials: FJ
authors.lastname: Torcal-Milla
authors.forename: Eusebio
authors.initials: E
authors.lastname: Bernabeu