T-ray imaging and tomography

We demonstrate two algorithms used for reconstructing the target's structure based on the diffracted pulses and additionally show that a three-dimensional target can be reconstructed using the broadband pulses and a Fresnel lens by virtue of its frequency dependent focal length. One advantage of T-ray imaging is the ability to measure the far-infrared spectral response of the target. To highlight the importance of this spectral information, we demonstrate T-ray classification imaging with different biological samples using a simple classification algorithm and two dimensional T-ray spectroscopic images.