title: Flexible terahertz wire grid polarizer with high extinction ratio and low loss.
abstract: An aluminum-based terahertz (THz) wire grid polarizer is theoretically investigated and experimentally demonstrated on a subwavelength thin flexible and conformal foil of the cyclo-olefin Zeonor polymer. THz time-domain spectroscopy characterization, performed on both flat and curved configurations, reveals a high extinction ratio between 40 and 45 dB in the 0.3-1 THz range and in excess of 30 dB up to 2.5 THz. The insertion losses are lower than 1 dB and are almost exclusively due to moderate Fabry-Perot reflections, which vanish at targeted frequencies. The polarizer can be easily fabricated with low-cost techniques such as roll-to-roll and/or large-area electronics processes and promises to open the way for a new class of flexible and conformal THz devices.
authors.forename: A
authors.initials: A
authors.lastname: Ferraro
authors.forename: D C
authors.initials: DC
authors.lastname: Zografopoulos
authors.forename: M
authors.initials: M
authors.lastname: Missori
authors.forename: M
authors.initials: M
authors.lastname: Peccianti
authors.forename: R
authors.initials: R
authors.lastname: Caputo
authors.forename: R
authors.initials: R
authors.lastname: Beccherelli