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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 13 — Jun. 22, 2009
  • pp: 10841–10848

Spectral artifacts from non-uniform samples analyzed by terahertz time-domain spectroscopy

Francis Théberge, Marc Châteauneuf, Jacques Dubois, Sylvain Désilets, and Louis-Simon Lussier  »View Author Affiliations

Optics Express, Vol. 17, Issue 13, pp. 10841-10848 (2009)

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We report the impact of the spatial coherence distortion on the measured absorption spectra and the identification of materials analyzed by terahertz time-domain spectroscopy. It is shown that the deformation of the terahertz beam wave front can result into the overestimation of the electromagnetic absorption, the generation of artificial absorption peaks and even to the disappearance of characteristic absorption peaks. Obtaining clear absorption spectra without artifacts is crucial for applications based on terahertz imaging and spectroscopy.

© 2009 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: March 23, 2009
Revised Manuscript: April 18, 2009
Manuscript Accepted: April 19, 2009
Published: June 15, 2009

Francis Théberge, Marc Châteauneuf, Jacques Dubois, Sylvain Désilets, and Louis-Simon Lussier, "Spectral artifacts from non-uniform samples analyzed by terahertz time-domain spectroscopy," Opt. Express 17, 10841-10848 (2009)

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