We present time-domain transmission imaging of an opaque structure in pork-fat tissue obtained with a terahertz (THz) field sampling technique. Compared with imaging with near-infrared pulses, the terahertz sampling technique shows significantly enhanced contrast, as a result of low scattering. For enhanced spatial resolution, we show mid-infrared THz imaging of onion cells. Water absorption of THz pulse in muscle tissues is discussed.
© 2000 Optical Society of America
(110.3080) Imaging systems : Infrared imaging
(170.6920) Medical optics and biotechnology : Time-resolved imaging
(290.5820) Scattering : Scattering measurements
(290.7050) Scattering : Turbid media
(300.6270) Spectroscopy : Spectroscopy, far infrared
P. Y. Han, G. C. Cho, and X.-C. Zhang, "Time-domain transillumination of biological tissues with terahertz pulses," Opt. Lett. 25, 242-244 (2000)