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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 15 — Jul. 19, 2010
  • pp: 15338–15348

Gouy shift correction for highly accurate refractive index retrieval in time-domain terahertz spectroscopy

P. Kužel, H. Němec, F. Kadlec, and C. Kadlec  »View Author Affiliations

Optics Express, Vol. 18, Issue 15, pp. 15338-15348 (2010)

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Terahertz spectroscopic measurements are usually performed in focused beam geometry while the standard routine for the retrieval of the sample refractive index assumes plane-wave approximation. In this paper we propose a model for the transmission function which accounts for spatially limited Gaussian terahertz beams. We demonstrate experimentally its validity and applicability for an accurate extraction of the refractive index from experimental data.

© 2010 OSA

OCIS Codes
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: April 28, 2010
Revised Manuscript: June 9, 2010
Manuscript Accepted: June 9, 2010
Published: July 2, 2010

P. Kužel, H. Němec, F. Kadlec, and C. Kadlec, "Gouy shift correction for highly accurate refractive index retrieval in time-domain terahertz spectroscopy," Opt. Express 18, 15338-15348 (2010)

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