Polarization sensitive terahertz imaging: Detection of birefringence and optical axis

Stefan Katletz, Michael Pfleger, Harald Pühringer, Martin Mikulics, Nico Vieweg, Ole Peters, Benedikt Scherger, Maik Scheller, Martin Koch, Karin Wiesauer

Research output: Contribution to journalArticlepeer-review

65 Scopus citations


We present a practicable way to take advantage of the spectral information contained in a broadband terahertz pulse for the determination of birefringence and orientation of the optical axis in a glass fiber reinforced polymer with a single measurement. Our setup employs circularly polarized terahertz waves and a polarization-sensitive detector to measure both components of the electromagnetic field simultaneously. The anisotropic optical parameters are obtained from an analysis of the phase and frequency resolved components of the terahertz field. This method shows a high tolerance against the skew of the detection axes and is also independent of a reference measurement.

Original languageEnglish (US)
Pages (from-to)23025-23035
Number of pages11
JournalOptics Express
Issue number21
StatePublished - Oct 8 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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