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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 15 — Jul. 19, 2010
  • pp: 15887–15892

Hybrid continuous wave terahertz spectroscopy

Maik Scheller, Matthias Stecher, Marina Gerhard, and Martin Koch  »View Author Affiliations

Optics Express, Vol. 18, Issue 15, pp. 15887-15892 (2010)

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We propose a hybrid architecture for continuous wave terahertz spectroscopy employing a conventional two color photomixing system combined with a quasi time domain spectrometer, driven by a multimode laser diode. This approach fuses high spectral intensity with broadband frequency information and overcomes the ambiguity of standard continuous wave thickness measurements.

© 2010 OSA

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(150.3045) Machine vision : Industrial optical metrology
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: May 27, 2010
Revised Manuscript: July 2, 2010
Manuscript Accepted: July 2, 2010
Published: July 12, 2010

Maik Scheller, Matthias Stecher, Marina Gerhard, and Martin Koch, "Hybrid continuous wave terahertz spectroscopy," Opt. Express 18, 15887-15892 (2010)

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  1. K. Fukunaga, Y. Ogawa, S. Hayashi, and I. Hosako, “Terahertz spectroscopy for art conservation,” IEICE Electron. Express 4(8), 258–263 (2007). [CrossRef]
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  17. R. Wilk, F. Breitfeld, M. Mikulics, and M. Koch, “Continuous wave terahertz spectrometer as a noncontact thickness measuring device,” Appl. Opt. 47(16), 3023–3026 (2008). [CrossRef] [PubMed]
  18. M. Scheller and M. Koch, “Terahertz quasi time domain spectroscopy,” Opt. Express 17(20), 17723–17733 (2009). [CrossRef] [PubMed]
  19. T. Yasui, T. Yasuda, K. Sawanaka, and T. Araki, “Terahertz paintmeter for noncontact monitoring of thickness and drying progress in paint film,” Appl. Opt. 44(32), 6849–6856 (2005). [CrossRef] [PubMed]
  20. M. Scheller and M. Koch, “Fast and accurate thickness determination of unknown materials using terahertz time domain spectroscopy,” J. Infrared, Millim, Terahertz Waves 30(7), 762–769 (2009). [CrossRef]
  21. E. R. Brown, F. W. Smith, and K. A. McIntosh, “Coherent millimeter-wave generation by heterodyne conversion in low-temperature-grown GaAs photoconductors,” J. Appl. Phys. 73(3), 1480–1484 (1993). [CrossRef]
  22. N. Vieweg, M. Mikulics, M. Scheller, K. Ezdi, R. Wilk, H. W. Hübers, and M. Koch, “Impact of the contact metallization on the performance of photoconductive THz antennas,” Opt. Express 16(24), 19695–19705 (2008). [CrossRef] [PubMed]
  23. A. J. Deninger, T. Göbel, D. Schönherr, T. Kinder, A. Roggenbuck, M. Köberle, F. Lison, T. Müller-Wirts, and P. Meissner, “Precisely tunable continuous-wave terahertz source with interferometric frequency control,” Rev. Sci. Instrum. 79(4), 044702 (2008). [CrossRef] [PubMed]

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