We describe a new imaging method that uses single-cycle pulses of terahertz
(THz) radiation. This technique emulates data-collection and image-process
ing procedures developed for geophysical prospecting and is made possible b
y the availability of fiber-coupled THz receiver antennas. We use a simple
migration procedure to solve the inverse problem; this permits us to recons
truct the location and shape of targets. These results demonstrate the feas
ibility of the THz system as a test-bed for the exploration of new seismic
processing methods involving complex model systems. (C) 2001 Optical Societ
y of America.