High power THz emitters for non-destructive testing, chemical analysis and imaging

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Terahertz radiation (THz, electromagnetic waves that are 0.03-3 mm long) has many unique properties that make it particularly attractive for remote sensing, chemical analysis and quality monitoring. THz waves are strongly absorbed by water, reflected by metal, but can easily penetrate paper or plastic packaging. In addition, many of the common materials have distinctive absorption "signatures" in this wavelength range. This make is possible not only to selectively identify specific materials, but also to obtain valuable information about their chemical composition. Industries such as food, pharmaceutical, biomedical, chemical, dairy, security, etc. will greatly benefit from applications of THz technology. At this moment, however, development of practical THz systems for real-world applications is severely limited by the lack of compact, powerful and efficient sources of this radiation. This research project is focused on the development of such THz emitters based on innovative laser and semiconductor technology. The work will be done in close collaboration with a leading Canadian company in the THz field, T-Ray Science Inc. The results of this project will enable T-Ray Science to develop reliable and cost-effective THz systems for spectroscopic analysis and imaging. This will make a significant contribution towards the availability of appropriate and affordable THz technology for many potential applications.