Over the past three decades a new spectroscopic technique with unique possibilities has
emerged. Based on coherent and time‐resolved detection of the electric field of ultrashort …

The terahertz range is generally defined as the portion of the electromagnetic spectrum that
lies between 100 GHz and 10 THz. It is situated above the microwave range, and below the …

Principles of Terahertz Science and Technology aims to elucidate the fundamentals of THz
technology and science for potential new users. It surveys major techniques of generating …

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

Terahertz signals were until recently an almost unexplored area of research due to the
difficulties in generation and detection of electromagnetic fields at these wavelengths …

Photoconductive antennas are promising sources of terahertz radiation that is widely used
for spectroscopy, characterization, and imaging of biological objects, deep space studies …

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 …

Photoconductive antennas are commonly used for terahertz wave generation and detection.
However, their relatively low radiation power and detection sensitivity often place limitations …

Within the last two decades, terahertz systems have become a well-established tool in
scientific laboratories and industrial research and development departments. Unlike the …

Electrons with a linear energy/momentum dispersion are called massless Dirac electrons
and represent the low-energy excitations in exotic materials such as graphene and …