The quantization of a real massless scalar eld in a spacetime produced in a collision of two electromagnetic plane waves with constant wave fronts is considered. The background geometry in the interaction region, the Bell-Szekeres solution, is locally isometric to the conformally at Bertotti-Robinson universe lled with a uniform electric eld. It is shown that before the waves interact the Bogol...

We review the geometrical-optics evolution of an electromagnetic wave propagating along a curved ray trajectory in a gradient-index dielectric medium. A Coriolis-type term appears in Maxwell equations under transition to the rotating coordinate system accompanying the ray. This term describes the spin-orbit coupling of light which consists of (i) the Berry phase responsible for a trajectory-dep...

The quantization of a real massless scalar field in a spacetime produced in a collision of two electromagnetic plane waves with constant wave fronts is considered. The background geometry in the interaction region, the Bell-Szekeres solution, is locally isometric to the con-formally flat Bertotti-Robinson universe filled with a uniform electric field. It is shown that before the waves interact ...

Based on full-wave electromagnetic theory, we derive the zero-forward and zero-backward scattering conditions for radially anisotropic spheres within the quasi-static limit. We find that the near-field intensity can be tuned dramatically through the adjustment of the radial anisotropy, while the far-field light scattering diagrams are similar under the zero-forward or zero-backward scattering c...

A broadband and broad-angle low-scattering metasurface is designed, fabricated, and characterized. Based on the optimization algorithm and far-field scattering pattern analysis, we propose a rapid and efficient method to design metasurfaces, which avoids the large amount of time-consuming electromagnetic simulations. Full-wave simulation and measurement results show that the proposed metasurfac...

The propagation of free electromagnetic radiation in the field of a plane gravitational wave is investigated. A solution is found one order of approximation beyond the limit of geometrical optics in both transverse–traceless (TT) gauge and Fermi Normal Coordinate (FNC) system. The results are applied to the study of polarization perturbations. Two experimental schemes are investigated in order ...

The energization of ions, due to interaction with electromagnetic turbulence (i.e. wave-particle interactions), has an important influence on H and O ions outflows in the polar region. The effects of altitude and velocity dependent wave-particle interaction on H and O ions outflows in the auroral region were investigated by using Monte Carlo method. The Monte Carlo simulation included the effec...

Single-Atoms Electromagnetic Wave Absorber In article number 2212604, Hongjing Wu, Limin Zhang, and co-workers report Ni-single-atoms/nitrogen-doped carbon absorbers. The continuous evolution of the microscopic electromagnetic loss is revealed for first time (conduction → Ni 3d orbital unpaired electrons induced polarization conduction loss), which provides insight into deep design absorbers fr...

Electromagnetic metasurface technology is one of the most promising technologies for electromagnetic energy regulation. It formed by an artificial periodic structure discrete subwavelengths at interface, allowing wavefront control and polarization subwavelength scale, exhibiting a variety special response capabilities, including abnormal beam bending, transformation, wave absorption, etc. We pr...