Cherenkov radiation is generally believed to be threshold‐free in hyperbolic metamaterials
owing to the extremely large photonic density of states in classical local framework. Although …

We construct the first-principles theory for the scattering of the Coulomb field of a fast
electron traveling along an array of nano-or microparticles. The electron's trajectory is …

We report the results of experimental and theoretical studies of monochromatic coherent
terahertz radiation generated by a short relativistic electron bunch interacting with a …

The intensity of Smith–Purcell radiation from metallic and dielectric gratings (silicon, silica) is
compared in a frequency-domain simulation. The numerical model is discussed and verified …

Smith-Purcell radiation (SPR) is a kind of electromagnetic wave radiation that happens
when an energetic beam of electrons passes very closely parallel to the surface of a ruled …

In conventional materials, Cherenkov radiation (CR) due to a moving charged particle is
associated with a broad frequency range and velocity threshold. Here, we show that using a …

In this work we construct the first-principles theory for the near-field resonances arising in the
system of two different coupled nanoparticles excited by the external field. The obtained …

We present an intensive vertical orientation Smith–Purcell radiation with the 2D well-array
metasurface. It is shown that the moving electrons can induce three induced surface currents …

We developed a theory of electron scattering by a short-range repulsive potential in a cavity.
In the regime of ultrastrong electron coupling to the cavity electromagnetic field, the vacuum …

Nowadays, intense electromagnetic (EM) radiation in the far-infrared (FIR) spectral range is
an advanced tool for scientific research in biology, chemistry, and material science because …