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Title: Terahertz homodyne self-mixing transmission spectroscopy

A compact homodyne self-mixing terahertz spectroscopy concept is experimentally investigated and confirmed by calculations. This method provides amplitude and phase information of the terahertz radiation emitted by a photoconductive antenna in a transmission experiment where a rotating chopper wheel serves as a feedback mirror. As a proof-of-principle experiment the frequency-dependent refractive index of Teflon is measured.
Authors:
; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Institute for Applied Physics, Technische Universität Darmstadt, Schlossgartenstr. 7, 64289 Darmstadt (Germany)
  2. Dipartimento di Ingegneria Industriale e dell'Informazione, Università di Pavia, Via Ferrata 1, i-27100 Pavia (Italy)
  3. Toptica Photonics AG, Lochhamer Schlag 19, 82166 Gräfelfing (Germany)
  4. Dipartimento di Ingegneria Civile e Architettura, Università di Pavia, Via Ferrata 3, i-27100 Pavia (Italy)
Publication Date:
OSTI Identifier:
22412590
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTENNAS; EMISSION; FEEDBACK; FREQUENCY DEPENDENCE; MIRRORS; PHOTOCONDUCTIVITY; REFRACTIVE INDEX; TEFLON; THZ RANGE; TRANSMISSION