Электромагнитные волны

Theoretical description of the Pockels effect is offered in which statement of a problem in the form of Maxwell equations allows to go on to wave equations directly and to find their solutions. Analytical expressions determining phase velocities and polarization of the optical plane waves, propagating in crystal of lithium niobate in principal crystallographic directions, for different cases of influence of an exterior static electric field are gained.

We review the results of studies of spontaneous and stimulated emission of relativistic particles in natural and photonic crystals.We consider the diffraction of electromagnetic waves in a crystal, and the resonance and parametric (quasi-Cherenkov) X-ray radiation, the radiation in the channeling of relativistic particles in crystals, diffraction radiation in conditions of channeling, diffraction radiation of a relativistic oscillator, induced radiation in multidimensional space-periodic resonators (natural or artificial (electromagnetic, photonic) crystals).