23 citations · 101 across the 10 of their papers we have counts for
10 papers
The Role of Hypersound in Stimulation of Resonant Transitions in Positronium Atom
E. A. Ayryan, A. S. Gevorkyan, M. Hnatic +2
The possibilities of stimulation of resonant transitions between quantum states of Positron Atom by the external hypersound are investigated in detail.
On a Positron Channeling in Ionic Crystals
E. A. Ayryan, A. S. Gevorkyan, M. Hnatic +4
An analytical expression is received for the effective interaction potential of a fast charged particle with the ionic crystal CsCl near the direction of axis <100> as a function o…
The Effect of Defect Layer on Lasing in Cholesteric Liquid Crystal
A. H. Gevorgyan, K. B. Oganesyan, N. Sh. Izmailian +9
The photonic density of states (PDS) of eigen polarizations (EPs) in cholesteric liquid crystal (CLC) cells with a defect layer inside are calculated. The dependences for the PDS a…
The Influence of Absorption and Gain on Photonic Density of States
A. H. Gevorgyan, K. B. Oganesyan, N. Sh. Izmailian +8
The photonic density of states (PDS) of the eigen polarizations (EPs) in cholesteric liquid crystal (CLC) cells are calculated. The exact analytic expressions for the reflection an…
Polarization Properties of the Cholesteric Liquid Crystals
A. H. Gevorgyan, M. Z. Harutyunyan, K. B. Oganesyan +5
In the present paper, we investigate the polarization properties of the cholesteric liquid crystals (CLCs) with an isotropic/anisotropic defect inside them. Possibilities of amplif…
Radiation Peculiarities in Chiral Photonic Crystals
A. H. Gevorgyan, K. B. Oganesyan, E. A. Ayryan +2
The peculiarities of defect modes and reflection spectra of chiral photonic crystals (CPC) with an isotropic defect for various thicknesses of the defect layer was investigated. Th…
Composite Cell from Nematic and Cholesteric Liquid Crystals as an Rotator of Electrically Tunable Polarization Plane
A. H. Gevorgyan, K. B. Oganesyan, E. A. Ayryan +6
A liquid crystal optical device made of an optically anisotropic heterostructure is considered. The device consists of a cholesteric liquid crystal (CLC) layer sandwiched by two ph…
Undulator radiation in the THz range
L. A. Gabrielyan, Y. A. Garibyan, Y. R. Nazaryan +4
The experimental device for generation of undulator radiation in terahertz wavelength region by use of undulator on ferromagnets is created. The device is based on a beam of a micr…
Infrared Radiation from Rough Surface
E. A. Ayryan, A. H. Gevorgyan, K. B. Oganesyan
We consider generation of diffusive radiation by a charged particle passing through a random stack of plates in the infrared region. Diffusive radiation originates due to multiple…
How Magnetic Field Inhomogeneity of Plane Wiggler Affects Spontaneous Radiation of Electrons
E. A. Ayryan, A. H. Gevorgyan, M. Hnatic +3
The spectral distribution of spontaneous emission of electrons moving in a plane wiggler with inhomogeneous magnetic field is calculated. We show that electrons do complicated moti…