title: Single-walled carbon nanotubes as base material for THz photoconductive switching: a theoretical study from input power to output THz emission.
abstract: This paper studies the relation between photoexcitation of a single-walled carbon nanotube (SWNT) based device, and its THz output power in the context of THz photoconductive (PC) switching and THz photomixing. A detailed approach of calculating output THz power for such a device describes the effect of each parameter on the performance of the THz PC switch and highlights the design dependent achievable limits. A numerical assessment, with typical values for each parameter, shows that-subject to thermal stability of the device-SWNT based PC switch can improve the output power by almost two orders of magnitudes compared to conventional materials such as LT-GaAs.
authors.affiliation: Department of Electrical and Computer Engineering, University of Victoria, 3800 Finnerty Rd, Victoria, BC V8P 5C2, Canada. barmak@uvic.ca
authors.forename: Barmak
authors.initials: B
authors.lastname: Heshmat
authors.forename: Hamid
authors.initials: H
authors.lastname: Pahlevaninezhad
authors.forename: Matthew Craig
authors.initials: MC
authors.lastname: Beard
authors.forename: Chris
authors.initials: C
authors.lastname: Papadopoulos
authors.forename: Thomas Edward
authors.initials: TE
authors.lastname: Darcie
mesh_terms: D002244:Carbon / Q000737:chemistry; D004867:Equipment Design; D006358:Hot Temperature; D008027:Light; D008422:Materials Testing; D015233:Models, Statistical; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D055095:Optics and Photonics; D012666:Semiconductors; D055068:Terahertz Spectroscopy / Q000379:methods; D013997:Time Factors
chemical_list: D037742:Nanotubes, Carbon; D002244:Carbon