Imaging with terahertz waves.

  title={Imaging with terahertz waves.},
  author={B. B. Hu and M. Nuss},
  journal={Optics letters},
  volume={20 16},
  • B. B. Hu, M. Nuss
  • Published 1995
  • Physics, Medicine
  • Optics letters
  • We present what is to our knowledge the first imaging system based on optoelectronic terahertz time-domain spectroscopy. Terahertz time-domain waveforms are downconverted from the terahertz to the kilohertz frequency range, and the waveform for each pixel is frequency analyzed in real time with a digital signal processor to extract compositional information at that point. We demonstrate applications to package inspection and chemical content mapping in biological objects. 
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