Journal ArticleDOI
T-ray tomography.
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TLDR
In this article, the authors demonstrate tomographic T-ray imaging using the timing information present in terahertz (THz) pulses in a reflection geometry, where the time delays of these pulses are used to determine the positions of the discontinuities along the propagation direction.Abstract:
We demonstrate tomographic T-ray imaging, using the timing information present in terahertz (THz) pulses in a reflection geometry. THz pulses are reflected from refractive-index discontinuities inside an object, and the time delays of these pulses are used to determine the positions of the discontinuities along the propagation direction. In this fashion a tomographic image can be constructed.read more
Citations
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Journal ArticleDOI
Cutting-edge terahertz technology
TL;DR: An overview of the status of the terahertz technology, its uses and its future prospects are presented in this article, with a focus on the use of the waveband in a wide range of applications.
Journal ArticleDOI
Terahertz semiconductor-heterostructure laser
R. Kohler,Alessandro Tredicucci,Fabio Beltram,Harvey E. Beere,Edmund H. Linfield,Giles Davies,David A. Ritchie,Rita Claudia Iotti,Fausto Rossi +8 more
TL;DR: A monolithic terahertz injection laser that is based on interminiband transitions in the conduction band of a semiconductor (GaAs/AlGaAs) heterostructure is reported, which is very promising for extending the present laser concept to continuous-wave and high-temperature operation, which would lead to implementation in practical photonic systems.
Journal ArticleDOI
Terahertz spectroscopy and imaging – Modern techniques and applications
TL;DR: The terahertz time-domain spectroscopy (THz-TDS) as discussed by the authors is a new spectroscopic technique based on coherent and time-resolved detection of the electric field of ultrashort radiation bursts.
Journal ArticleDOI
THz imaging and sensing for security applications—explosives, weapons and drugs
John F. Federici,Brian Schulkin,Feng Huang,Dale E. Gary,Robert Barat,Filipe Oliveira,David Zimdars +6 more
TL;DR: In this article, stand-off interferometric imaging and sensing for the detection of explosives, weapons and drugs is emphasized, and future prospects of terahertz technology are discussed.
Journal ArticleDOI
Imaging with terahertz radiation
TL;DR: A comprehensive review of the various techniques used for terahertz image formation can be found in this paper, as well as numerous examples which illustrate the many exciting potential uses for these emerging technologies.
References
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Book
Principles of Computerized Tomographic Imaging
TL;DR: Properties of Computerized Tomographic Imaging provides a tutorial overview of topics in tomographic imaging covering mathematical principles and theory and how to apply the theory to problems in medical imaging and other fields.
Journal ArticleDOI
Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors
TL;DR: In this paper, the authors measured the far-infrared absorption and dispersion from 0.2 to 2 THz of the crystalline dielectrics sapphire and quartz, fused silica, and the semiconductors silicon, gallium arsenide, and germanium.
Journal ArticleDOI
Imaging with terahertz waves
B. B. Hu,Martin C. Nuss +1 more
TL;DR: This work presents what is to their knowledge the first imaging system based on optoelectronic terahertz time-domain spectroscopy, and demonstrates applications to package inspection and chemical content mapping in biological objects.
Journal ArticleDOI
T-ray imaging
TL;DR: In this paper, the authors describe the technology necessary to perform terahertz "T-ray" imaging, novel imaging techniques, and commercial applications of T-ray imaging.
Journal ArticleDOI
Terahertz time-domain spectroscopy of water vapor.
TL;DR: By analyzing the propagation of terahertz electromagnetic pulses through water vapor, this work has made what it is believed are the most accurate measurements to date of the absorption cross sections of the water molecule for the nine strongest lines.