title: Negative refraction and the spectral filtering of terahertz radiation by a photonic crystal prism.
abstract: We demonstrate how micromachined photonic crystals can be used to negatively refract terahertz frequency light. The photonic crystals, which are constructed from conventional dielectric materials, manipulate the incident beam via interaction with their photonic bands. Consequently, we show that different components of a broadband beam incident on the structure may be positively or negatively refracted, depending upon its frequency and that the structure can be used as an effective spectral filter of THz radiation.
authors.affiliation: Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK. g.p.swift@durham.ac.uk
authors.forename: G P
authors.initials: GP
authors.lastname: Swift
authors.forename: A J
authors.initials: AJ
authors.lastname: Gallant
authors.forename: N
authors.initials: N
authors.lastname: Kaliteevskaya
authors.forename: M A
authors.initials: MA
authors.lastname: Kaliteevski
authors.forename: S
authors.initials: S
authors.lastname: Brand
authors.forename: D
authors.initials: D
authors.lastname: Dai
authors.forename: A J
authors.initials: AJ
authors.lastname: Baragwanath
authors.forename: I
authors.initials: I
authors.lastname: Iorsh
authors.forename: R A
authors.initials: RA
authors.lastname: Abram
authors.forename: J M
authors.initials: JM
authors.lastname: Chamberlain
mesh_terms: D055096:Optical Devices; D055620:Optical Phenomena; D017785:Photons; D013057:Spectrum Analysis; D055053:Terahertz Radiation