title: Broadband and wide angle infrared wire-grid polarizer.
abstract: An infrared polarizer consisting of metal-insulator-metal (MIM) gratings is designed with transmittance exceeding 85% and polarization extinction ratio (ER) higher than 70 dB in the wavelength range from 1.5 to 8 μm. Moreover, the polarizer retains excellent performance even when the incident angle increases to as large as 80°. The MIM gratings support magnetic polariton (MP) in the near-infrared regime and operate non-resonantly in the mid-infrared regime, both of which result in the advantages of high extinction ratio, broadband, and wide angle. The proposed structure can find applications in polarizer, beam-splitter, filter, and isolator in the infrared range.
authors.forename: Ming
authors.initials: M
authors.lastname: Dai
authors.forename: Weiwei
authors.initials: W
authors.lastname: Wan
authors.forename: Xueyi
authors.initials: X
authors.lastname: Zhu
authors.forename: Baosheng
authors.initials: B
authors.lastname: Song
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Liu
authors.forename: Minghui
authors.initials: M
authors.lastname: Lu
authors.forename: Bo
authors.initials: B
authors.lastname: Cui
authors.forename: Yanfeng
authors.initials: Y
authors.lastname: Chen