title: Terahertz wire grid polarizer fabricated by imprinting porous silicon.
abstract: A terahertz (THz) wire-grid polarizer is fabricated by imprinting porous Si followed by oblique evaporation of Ag. We demonstrate that it works in a wide frequency region covering from 5 to 18 THz with the extinction ratio of 10 dB. The frequency region is much wider than that of THz wire-grid polarizers fabricated by conventional imprint lithography using organic materials. The result suggests that imprinting of porous Si is a promising fabrication technique to realize low-cost wire-grid polarizers working in the THz region.
authors.forename: Kenji
authors.initials: K
authors.lastname: Imakita
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kamada
authors.forename: Minoru
authors.initials: M
authors.lastname: Fujii
authors.forename: Kanna
authors.initials: K
authors.lastname: Aoki
authors.forename: Minoru
authors.initials: M
authors.lastname: Mizuhata
authors.forename: Shinji
authors.initials: S
authors.lastname: Hayashi