Terahertz (THz) radiation encompasses a wide spectral range within the electromagnetic
spectrum that extends from microwaves to the far infrared (100 GHz–∼ 30 THz). Within its …

Confinement of electromagnetic fields at the subwavelength scale via metamaterial
paradigms is an established method to engineer light–matter interaction in most common …

This paper compares different photocathodes that are applicable for electron injector
systems and summarizes the development in cathode technology in the last years. The …

The nonlinear Hall effect with time-reversal symmetry is a second-order electronic transport
phenomenon—seen as a quadratic voltage transverse to an applied electric field—that …

Achieving efficient, high-power harmonic generation in the terahertz spectral domain has
technological applications, for example, in sixth generation (6G) communication networks …

Efficient generation and control of spin currents launched by terahertz (THz) radiation with
subsequent ultrafast spin-to-charge conversion is the current challenge for the next …

We discuss experimental and theoretical studies of the generation of the third terahertz
(THz) frequency harmonic in thin films of Bi2Se3 and Bi2-xSbxTe3-ySey (BSTS) topological …

Enhancement of conductivity is the common photoresponse when incident photons
temporarily generate free carries after photoexcitation in a solid-crystalline-material. In sharp …

In this article, for educational purposes aimed at beginners interested in the study of ultrafast
magnetism dynamics, we offer a comprehensive methodology that covers the foundational …

Integration of active elements into silicon wafers is the first step towards their usage in
modern electronic devices based on nanometric structures. Spintronic terahertz emitters …