title: Thin-film spatial filters.
abstract: A thin-film optical filter used as a one-dimensional spatial filter is presented, and its design is briefly examined. The filter consists of a stack of quarter-wave dielectric layers upon a right-angle prism that selectively cancel a reflected or transmitted plane-wave front for various angles of incidence. Transmittance and reflectance are low-pass functions or high-pass functions of the angle of incidence with a high degree of steepness. In combination, these filters exhibit bandpass transmittance with a variable bandwidth. Applications to detection of extrasolar planets are briefly discussed.
authors.affiliation: Unidad Academica de Fisica, Universidad Autonoma de Zacatecas, Zacatecas 98060, Mexico. morenoi@hotmail.com
authors.forename: Ivan
authors.initials: I
authors.lastname: Moreno
authors.forename: J Jesus
authors.initials: JJ
authors.lastname: Araiza
authors.forename: Maximino
authors.initials: M
authors.lastname: Avendano-Alejo