title: Broadband terahertz polarizers with ideal performance based on aligned carbon nanotube stacks.
abstract: We demonstrate a terahertz polarizer built with stacks of aligned single-walled carbon nanotubes (SWCNTs) exhibiting ideal broadband terahertz properties: 99.9% degree of polarization and extinction ratios of 10(-3) (or 30 dB) from ~0.4 to 2.2 THz. Compared to structurally tuned and fragile wire-grid systems, the performance in these polarizers is driven by the inherent anistropic absorption of SWCNTs that enables a physically robust structure. Supported by a scalable dry contact-transfer approach, these SWCNT-based polarizers are ideal for emerging terahertz applications.
authors.affiliation: Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA.
authors.forename: Lei
authors.initials: L
authors.lastname: Ren
authors.forename: Cary L
authors.initials: CL
authors.lastname: Pint
authors.forename: Takashi
authors.initials: T
authors.lastname: Arikawa
authors.forename: Kei
authors.initials: K
authors.lastname: Takeya
authors.forename: Iwao
authors.initials: I
authors.lastname: Kawayama
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Tonouchi
authors.forename: Robert H
authors.initials: RH
authors.lastname: Hauge
authors.forename: Junichiro
authors.initials: J
authors.lastname: Kono
mesh_terms: D016880:Anisotropy; D008567:Membranes, Artificial; D037742:Nanotubes, Carbon / Q000737:chemistry*; D055096:Optical Devices; D010316:Particle Size; D013499:Surface Properties; D055068:Terahertz Spectroscopy
chemical_list: D008567:Membranes, Artificial; D037742:Nanotubes, Carbon