title: THz triangulation and stand-off measurement of the refractive index.
abstract: We have constructed a pulsed THz imaging system based on the triangulation method. The system is capable of stand-off measurements, especially of retrieving the refractive index in a non-tactile manner even if the thickness of the object is unknown. The distance between emitter and imaged object for the presented measurements was 1.3m. We have measured a variety of samples in order to determine the capabilities and to optimize the optical properties of the instrument.
authors.affiliation: Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Germany. wiegand@physik.uni-kl.de
authors.forename: Christian
authors.initials: C
authors.lastname: Wiegand
authors.forename: Michael
authors.initials: M
authors.lastname: Herrmann
authors.forename: René
authors.initials: R
authors.lastname: Beigang