title: Spectrum to space transformed fast terahertz imaging.
abstract: We present an imaging technique in which the broadband frequency information of terahertz (THz) pulses is transformed into spatial resolution. Efficient blazed diffractive gratings spread the individual frequency components over a wide and defined spatial range and f-theta optics are employed to focus the individual components onto a one-dimensional image-line. Measuring the time domain waveform of the THz waves allows therefore for a direct reconstruction of spatial sample characteristics as the spatial domain information is encoded in the terahertz spectrum. We will demonstrate terahertz imaging on selected samples with an improvement in acquisition speed up to two orders of magnitude.
authors.affiliation: Fachbereich Physik, Philipps-Universität Marburg, Marburg, Germany. steffen.schumann@physik.uni-marburg.de
authors.forename: Steffen
authors.initials: S
authors.lastname: Schumann
authors.forename: Christian
authors.initials: C
authors.lastname: Jansen
authors.forename: Michael
authors.initials: M
authors.lastname: Schwerdtfeger
authors.forename: Stefan
authors.initials: S
authors.lastname: Busch
authors.forename: Ole
authors.initials: O
authors.lastname: Peters
authors.forename: Maik
authors.initials: M
authors.lastname: Scheller
authors.forename: Martin
authors.initials: M
authors.lastname: Koch
mesh_terms: D000465:Algorithms; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D055069:Terahertz Imaging / Q000379:methods*