title: Broadband iridium wire grid polarizer for UV applications.
abstract: In this Letter, we present an iridium wire grid polarizer with a large spectral working range from IR down to the UV spectral region. The required grating period of 100 nm for an application below a wavelength of 300 nm was realized using a spatial frequency doubling technique based on ultrafast electron beam writing. The optical performance of the polarizer at a wavelength of 300 nm is a transmittance of almost 60% and an extinction ratio of about 30 (15 dB). Furthermore, the oxidation resistance is discussed.
authors.affiliation: Institut für Angewandte Physik, Friedrich-Schiller-Universität Jena, Jena, Germany. th.weber@uni‑jena.de
authors.forename: Thomas
authors.initials: T
authors.lastname: Weber
authors.forename: Thomas
authors.initials: T
authors.lastname: Käsebier
authors.forename: Ernst-Bernhard
authors.initials: EB
authors.lastname: Kley
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann