Industrial applications of THz systems

S. Wietzke, C. Jansen, C. Jordens, N. Krumbholz, N. Vieweg, M. Scheller, M. K. Shakfa, D. Romeike, T. Hochrein, M. Mikulics, M. Koch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Scopus citations

Abstract

Terahertz time-domain spectroscopy (THz TDS) holds high potential as a non-destructive, non-contact testing tool. We have identified a plethora of emerging industrial applications such as quality control of industrial processes and products in the plastics industry. Polymers are transparent to THz waves while additives show a significantly higher permittivity. This dielectric contrast allows for detecting the additive concentration and the degree of dispersion. We present a first inline configuration of a THz TDS spectrometer for monitoring polymeric compounding processes. To evaluate plastic components, non-destructive testing is strongly recommended. For instance, THz imaging is capable of inspecting plastic weld joints or revealing the orientation of fiber reinforcements. Water strongly absorbs THz radiation. However, this sensitivity to water can be employed in order to investigate the moisture absorption in plastics and the water content in plants. Furthermore, applications in food technology are discussed. Moreover, security scanning applications are addressed in terms of identifying liquid explosives. We present the vision and first components of a handheld security scanner. In addition, a new approach for parameter extraction of THz TDS data is presented. All in all, we give an overview how industry can benefit from THz TDS completing the tool box of non-destructive evaluation.

Original languageEnglish (US)
Title of host publicationInternational Symposium on Photoelectronic Detection and Imaging 2009 - Terahertz and High Energy Radiation Detection Technologies and Applications
Number of pages1
DOIs
StatePublished - Nov 23 2009
EventInternational Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications - Beijing, China
Duration: Jun 17 2009Jun 19 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7385
ISSN (Print)0277-786X

Other

OtherInternational Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications
CountryChina
CityBeijing
Period6/17/096/19/09

Keywords

  • Fiber orientation
  • Food inspection
  • Hydrology monitoring of plants
  • Liquid explosives
  • Parameter extraction
  • Plastics industry
  • Security systems
  • Terahertz time-domain spectroscopy
  • Water content

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Wietzke, S., Jansen, C., Jordens, C., Krumbholz, N., Vieweg, N., Scheller, M., Shakfa, M. K., Romeike, D., Hochrein, T., Mikulics, M., & Koch, M. (2009). Industrial applications of THz systems. In International Symposium on Photoelectronic Detection and Imaging 2009 - Terahertz and High Energy Radiation Detection Technologies and Applications (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7385). https://doi.org/10.1117/12.840991