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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 9 — Apr. 27, 2009
  • pp: 7533–7539

High-resolution time-of-flight terahertz tomography using a femtosecond fiber laser

Jun Takayanagi, Hiroki Jinno, Shingo Ichino, Koji Suizu, Masatsugu Yamashita, Toshihiko Ouchi, Shintaro Kasai, Hideyuki Ohtake, Hirohisa Uchida, Norihiko Nishizawa, and Kodo Kawase  »View Author Affiliations

Optics Express, Vol. 17, Issue 9, pp. 7533-7539 (2009)

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High-resolution tomographic imaging is demonstrated using a reflection-type terahertz time-domain spectroscopy. To realize a practical system for general use, a robust all-fiber laser was used as the pump light source. Broadband terahertz waves were generated with the combination of optical pulses compressed to 17 fs using optical fibers and a DAST crystal. Using deconvolution signal processing, the wideband spectrum of the generated terahertz waves provided high-axial resolution leading to successful imaging of a multilayered structure containing a 2-μm-thin GaAs layer. To our knowledge, this is the first demonstration of terahertz tomographic imaging of such a thin layer.

© 2009 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.7090) Lasers and laser optics : Ultrafast lasers
(110.6795) Imaging systems : Terahertz imaging
(110.6955) Imaging systems : Tomographic imaging

ToC Category:
Imaging Systems

Original Manuscript: March 12, 2009
Revised Manuscript: April 17, 2009
Manuscript Accepted: April 17, 2009
Published: April 22, 2009

Jun Takayanagi, Hiroki Jinno, Shingo Ichino, Koji Suizu, Masatsugu Yamashita, Toshihiko Ouchi, Shintaro Kasai, Hideyuki Ohtake, Hirohisa Uchida, Norihiko Nishizawa, and Kodo Kawase, "High-resolution time-of-flight terahertz tomography using a femtosecond fiber laser," Opt. Express 17, 7533-7539 (2009)

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