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 …

The fabrication and investigation of single and multilayered structures have become an
essential issue in the past decades since these structures directly define valuable properties …

Semiconductor devices have become indispensable for generating electromagnetic
radiation in everyday applications. Visible and infrared diode lasers are at the core of …

A highly important area where semiconductors and semimetals technology plays a major
role is that of optical Sensing devices. Receiving initial impetus because of infrared detector …

After the evolution of oxygen-producing cyanobacteria at some time before 2.7 billion years
ago, oxygen production on Earth is thought to have depended on the availability of nutrients …

A three-dimensional semiclassical Monte Carlo model is presented to describe fast carrier
dynamics in semiconductors after photoexcitation. Far-field terahertz (THz) radiation patterns …

Powerful coherent emission around the plasma oscillation frequency can be produced from
a laser wakefield through linear mode conversion. This occurs when the laser pulse is …

We perform a comprehensive comparison between terahertz (THz) time-domain
spectroscopy and conventional far-infrared Fourier transform spectroscopy, including …

Generation of high‐power radiation in terahertz frequency range 0.3–10 THz is a fast
develo** research area attracting considerable interest over the past years due to its …

This paper reports on a free-space broadband terahertz (THz) spectroscopy technique with
frequency ranging from 30 GHz to over 40 THz. A historical review is given on the …