Terahertz homodyne self-mixing transmission spectroscopy

Journal Article · Mon Feb 09 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4908059· OSTI ID:22412590

Mohr, Till; Breuer, Stefan; Blömer, Dominik; Patel, Sanketkumar; Schlosser, Malte; Birkl, Gerhard; Elsäßer, Wolfgang ^[1]; Simonetta, Marcello ^[2]; Deninger, Anselm ^[3]; Giuliani, Guido ^[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)

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.

• OSTI ID: 22412590
• Journal Information: Applied Physics Letters, Vol. 106, Issue 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTENNAS
EMISSION
FEEDBACK
FREQUENCY DEPENDENCE
MIRRORS
PHOTOCONDUCTIVITY
REFRACTIVE INDEX
TEFLON
THZ RANGE
TRANSMISSION