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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 11 — May. 23, 2011
  • pp: 10269–10277

THz triangulation and stand-off measurement of the refractive index

Christian Wiegand, Michael Herrmann, and René Beigang  »View Author Affiliations

Optics Express, Vol. 19, Issue 11, pp. 10269-10277 (2011)

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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.

© 2011 OSA

OCIS Codes
(110.6880) Imaging systems : Three-dimensional image acquisition
(040.2235) Detectors : Far infrared or terahertz
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Imaging Systems

Original Manuscript: February 23, 2011
Revised Manuscript: April 6, 2011
Manuscript Accepted: April 20, 2011
Published: May 10, 2011

Christian Wiegand, Michael Herrmann, and René Beigang, "THz triangulation and stand-off measurement of the refractive index," Opt. Express 19, 10269-10277 (2011)

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