title: Non-ellipsometric detection of terahertz radiation using heterodyne EO sampling in the Cherenkov velocity matching scheme.
abstract: A new electro-optic (EO) sampling scheme, which we refer to as "heterodyne EO sampling", for detection of pulsed terahertz (THz) waves is proposed and experimentally demonstrated. In this heterodyne EO sampling scheme, the intensity change in the optical probe pulse induced by a THz field in a nonlinear crystal is measured without any polarization optics. Applied in combination with the non-collinear Cherenkov velocity matching technique, this method allows one to detect pulsed THz waves efficiently and easily using a simpler optical setup as compared to the conventional ellipsometric EO sampling method.
authors.affiliation: Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan. tani@fir.u-fukui.ac.jp
authors.forename: Masahiko
authors.initials: M
authors.lastname: Tani
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Kinoshita
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Nagase
authors.forename: Kazuki
authors.initials: K
authors.lastname: Horita
authors.forename: Christopher T
authors.initials: CT
authors.lastname: Que
authors.forename: Elmer
authors.initials: E
authors.lastname: Estacio
authors.forename: Kohji
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Michael I
authors.initials: MI
authors.lastname: Bakunov
mesh_terms: D000465:Algorithms; D004867:Equipment Design; D019544:Equipment Failure Analysis; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods*; D055053:Terahertz Radiation