title: Broadband long-wavelength infrared Si/SiO2 subwavelength grating reflector.
abstract: A long-wavelength IR broadband reflector is demonstrated using a high-index-contrast subwavelength grating based on a Si/SiO2 system. The field response has been computationally and experimentally verified to exhibit broadband reflectance in the spectral range of 13-16 μm with Δλ/λ=18.5% for reflectance >70%. The gratings exhibit incident field polarization dependence with an average extinction ratio of 1:1.6.
authors.affiliation: Applied Physics Program, University of Michigan, Ann Arbor, Michigan 48109, USA. foleyjm@umich.edu
authors.forename: Justin M
authors.initials: JM
authors.lastname: Foley
authors.forename: Anne M
authors.initials: AM
authors.lastname: Itsuno
authors.forename: Tanya
authors.initials: T
authors.lastname: Das
authors.forename: Silviu
authors.initials: S
authors.lastname: Velicu
authors.forename: Jaimie D
authors.initials: JD
authors.lastname: Phillips