title: Giant tunable Faraday effect in a semiconductor magneto-plasma for broadband terahertz polarization optics.
abstract: We report on a giant Faraday effect in an electron plasma in n-InSb probed via polarization-resolved terahertz (THz) time-domain spectroscopy. Polarization rotation angles and ellipticities reach as large as π/2 and 1, respectively, over a wide frequency range (0.3-2.5 THz) at magnetic fields of a few Tesla. The experimental results together with theoretical simulations show its promising ability to construct broadband and tunable THz polarization optics, such as a circular polarizer, half-wave plate, and polarization modulators.
authors.affiliation: Department of Electrical & Computer Engineering, Rice University, Houston, Texas 77005, USA.
authors.forename: Takashi
authors.initials: T
authors.lastname: Arikawa
authors.forename: Xiangfeng
authors.initials: X
authors.lastname: Wang
authors.forename: Alexey A
authors.initials: AA
authors.lastname: Belyanin
authors.forename: Junichiro
authors.initials: J
authors.lastname: Kono
mesh_terms: D003198:Computer Simulation; D060526:Magnetic Fields; D008956:Models, Chemical; D058626:Plasma Gases / Q000737:chemistry*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D012666:Semiconductors; D055053:Terahertz Radiation
chemical_list: D058626:Plasma Gases