THz signals interact in unique ways with materials and are an exciting area of research for new methods of non-destructive evaluation and medical imaging. This work in 3D image reconstruction of THz signals showed that despite noise issues, characteristics of the medium that the THz signals had passed through could be reconstructed by modeling the transmission as a series of lowpass filters and using cepstral deconvolution techniques to create a stable reconstruction. Our group has no active work in this area but is interested in novel imaging methods, particularly for temporal imaging of biological activity.

Publications:

"Imaging with THz," M. R. Gupta, D. M. Mittleman, and R. G. Baraniuk, Proc. of the 2nd US-Japan Symposium on Non-Destructive Evaluation, pp. 1-6, 1999.

"Recent advances in terahertz imaging," D. M. Mittleman, M. Gupta, R. Neelamani, R. G. Baraniuk, J. V. Rudd, and M. Koch, Applied Physics B, vol. 68, pp. 1085-1094, 1999.

"Recent advances in imaging and spectroscopy with T-Rays," Mittleman, D., Neelamani, R., Gupta, M., Baraniuk, R., Nuss, M.C., Proceedings of the International Conference on LASERS, pp. 7-11, 1998.