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Nondestructive Imaging of an Object Using the Compact Continuous-Wave Sub-Terahertz Imaging System  

Jang, Jin-Seok (Center for Safety Measurement, Korea Research Institute of Standards and Science)
Kwon, Il-Bub (Center for Safety Measurement, Korea Research Institute of Standards and Science)
Yoon, Dong-Jin (Center for Safety Measurement, Korea Research Institute of Standards and Science)
Seo, Dae-Cheol (Center for Safety Measurement, Korea Research Institute of Standards and Science)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.30, no.4, 2010 , pp. 352-358 More about this Journal
Abstract
This paper presented compact CW sub-THz imaging system using the terahertz transmitter(Tx) that generating 0.34 THz electromagnetic wave on based electronic device. Using 0.34 THz electromagnetic wave generated by Tx, we transmitted to sample by point by point scan method and measured transmitting terahertz wave magnitude and phase information respectively with terahertz receiver(Rx) based on sub harmonic mixer. This paper measured and compared images of several samples to obtain better imaging results by changing time delay and step distance of scanning stage which affect image resolution. Also, through the imaging measurement of various samples, we were able to assure possibility of application of terahertz wave.
Keywords
THz Imaging; CW Sub-THz Wave; Terahertz Transmitter and Receiver; Phase and Magnitude; Image Resolution; Nondestructive Testing;
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