The terahertz spectral region, which falls between the microwave and infrared ranges, is one of the most promising regions of the electromagnetic spectrum for research and industry, but it is currently underutilized in these areas. There is no universal definition for what constitutes the terahertz band, but the frequency range of 0.1 to 10 THz (? = 3 mm to 30 µm) is the most widely referenced (Figure 1). Due to its position within the electromagnetic spectrum, terahertz radiation has unique...

August 25 marked the Spitzer Space Telescope’s “sweet 16.” Launched in 2003 with a planned primary mission of 2.5 to 5 years, the infrared observatory — the last of NASA’s Great Observatories to take flight — far...

Just a few years ago, the application of terahertz radiation seemed obscure at best. If experts were asked for killer applications, few could be named. In 2018, however, terahertz measuring instruments are showing significant market potential....

Terahertz imaging is a promising technique for noncontact, noninvasive, nonionizing 3D spectroscopy. Terahertz rays, located between microwave and IR on the electromagnetic spectrum from approximately 0.06 THz (60 GHz) to 10 THz, are capable of...

Terahertz technologies have become a major field of applied research, driven by the tremendous potential of applications such as nondestructive testing, biomedical imaging, security screening and telecommunications. Imaging using THz radiation has...

As radiation sources become more efficient, detectors become more sensitive, and acquisition speeds up, terahertz computed tomography holds promise for nondestructively finding and distinguishing between different materials by visualizing spatial...

For ultrafast imaging at wavelengths well below the visible, consider the work being done by a team led by professors Henry Kapteyn and Margaret Murnane. The married couple holds appointments in physics at the University of Colorado at Boulder and...

It is now more than 180 years since the first image was captured by Joseph Nicéphore Niépce from an upstairs window on his estate in France using pewter plates and a camera obscura...