title: Fabrication of terahertz wire-grid polarizers.
abstract: Wire-grid polarizers for terahertz region were fabricated by manufacturing triangular grating using a ruling-based, ultraprecision diamond machining process and replicating the pattern into polymethylpentene (TPX) and cyklo-olefin copolymer (COC) sheets using hot embossing. On top of the imprinted structures, aluminum was evaporated in an oblique angle, forming an aluminum wire grid. The achieved extinction rate was over 150 for TPX polarizers and near 1000 for COC polarizers.
authors.affiliation: Department of Physics and Mathematics, University of Eastern Finland, P.O. Box 111, Joensuu FI-80101, Finland. anni.partanen@uef.fi
authors.forename: Anni
authors.initials: A
authors.lastname: Partanen
authors.forename: Juha
authors.initials: J
authors.lastname: Väyrynen
authors.forename: Sami
authors.initials: S
authors.lastname: Hassinen
authors.forename: Hemmo
authors.initials: H
authors.lastname: Tuovinen
authors.forename: Jarkko
authors.initials: J
authors.lastname: Mutanen
authors.forename: Tommi
authors.initials: T
authors.lastname: Itkonen
authors.forename: Pertti
authors.initials: P
authors.lastname: Silfsten
authors.forename: Pertti
authors.initials: P
authors.lastname: Pääkkönen
authors.forename: Markku
authors.initials: M
authors.lastname: Kuittinen
authors.forename: Kari
authors.initials: K
authors.lastname: Mönkkönen
authors.forename: Tapani
authors.initials: T
authors.lastname: Venäläinen