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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 2 — Jan. 21, 2008
  • pp: 1208–1221

Real-time terahertz color scanner for moving objects

Takeshi Yasui, Ken-ichi Sawanaka, Atsushi Ihara, Emmanuel Abraham, Mamoru Hashimoto, and Tsutomu Araki  »View Author Affiliations

Optics Express, Vol. 16, Issue 2, pp. 1208-1221 (2008)

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Terahertz time-domain spectroscopic (THz-TDS) imaging is an interesting new tool for nondestructive testing and other applications. However, the current speed of image acquisition is relatively low, making it difficult to use for moving objects. In this paper, we propose a real-time THz-TDS line scanner based on electro-optical time-to-space conversion and line focusing of a THz beam. The proposed system functions as a color scanner in the terahertz spectral region with fast line-scanning and has been successfully used to image objects, which are moved on a translation stage. The achieved THz-TDS imaging rate is 23 200 pixels per second. This proposed THz-TDS line scanner has the potential to become a powerful tool for monitoring moving objects in various real-world applications.

© 2008 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6495) Spectroscopy : Spectroscopy, teraherz
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Imaging Systems

Original Manuscript: December 7, 2007
Revised Manuscript: January 11, 2008
Manuscript Accepted: January 11, 2008
Published: January 16, 2008

Takeshi Yasui, Ken-ichi Sawanaka, Atsushi Ihara, Emmanuel Abraham, Mamoru Hashimoto, and Tsutomu Araki, "Real-time terahertz color scanner for moving objects," Opt. Express 16, 1208-1221 (2008)

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