Abstract

Single-point imagery of 2D objects is proposed by exploiting the extreme broadband nature of an ultrafast terahertz wave. In the proposed imagery, a collimated terahertz beam is illuminated on an object, and the scattered fields are measured through a hole at the Fourier plane in a conventional terahertz time-domain spectroscope. This arrangement allows conversion of radial spatial frequencies of the object to the temporal spectrum of the pulse. Hence, a 2D image can be readily obtained by rotating a hole around the optical axis. Experimental results confirm that a complicated object can be reliably imaged using only 30 waveform measurements.

© 2010 Optical Society of America

T-ray computed tomography

Bradley Ferguson, Shaohong Wang, Doug Gray, Derek Abbot, and X.-C. Zhang
Opt. Lett. 27(15) 1312-1314 (2002)

Optical encryption based on computational ghost imaging

Pere Clemente, Vicente Durán, Víctor Torres-Company, Enrique Tajahuerce, and Jesús Lancis
Opt. Lett. 35(14) 2391-2393 (2010)

T-ray tomography

Daniel M. Mittleman, Stefan Hunsche, Luc Boivin, and Martin C. Nuss
Opt. Lett. 22(12) 904-906 (1997)

Characterization of T-ray binary lenses

S. Wang, T. Yuan, E. D. Walsby, R. J. Blaikie, S. M. Durbin, D. R. S. Cumming, J. Xu, and X.-C. Zhang
Opt. Lett. 27(13) 1183-1185 (2002)

Correction of coherence gate curvature in high numerical aperture optical coherence imaging

Benedikt W. Graf, Steven G. Adie, and Stephen A. Boppart
Opt. Lett. 35(18) 3120-3122 (2010)