Terahertz time-domain spectroscopy (THz-TDS) is a powerful technique for material's
characterization and process control. It has been used for contact-free conductivity …

Terahertz (THz) waves are non-ionizing radiations with unique properties of both microwave
and infrared. THz imaging and spectroscopy have been widely used for non-destructive …

Multiple optical harmonic generation—the multiplication of photon energy as a result of
nonlinear interaction between light and matter—is a key technology in modern electronics …

Terahertz (THz) imaging can see through otherwise opaque materials. However, because of
the long wavelengths of THz radiation (λ= 400 μm at 0.75 THz), far-field THz imaging …

Terahertz (THz) radiation, which occupies a relatively unexplored portion of the
electromagnetic spectrum between the mid-infrared and microwave bands, offers innovative …

Squeezing light through nanometre-wide gaps in metals can lead to extreme field
enhancements, nonlocal electromagnetic effects and light-induced electron tunnelling. This …

Our study of THz wave generation in the pulsed laser induced air plasma with individually
controlled phase, polarization, and amplitude of the optical fundamental wave (ω) and its …

The application of THz to medical imaging is experiencing a surge in both interest and
federal funding. A brief overview of the field is provided along with promising and emerging …

Chemical and physical systems undergoing change display spectral signatures from the
radio frequency to the X-ray region of the electromagnetic spectrum. This has led to the …

Terahertz spectroscopy emerged about 13 years ago with the demonstration that nearly
single-cycle pulses of far-infrared radiation could be generated, propagated through free …