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By mathematical modeling methods the dependence of running-wave interferometer (RWI) output spectrum from the excitation conditions and the interferometer parameters were studied in detail. Also a comparison of half-wave length RWI simulation results with the theoretical calculations was performed.
We apply Monte Carlo wave function method and classical mechanics to description of the atomic motion in the field of laser radiation. Simultaneous use of quantum and classical mechanics for description of inner and translational motion avoids quantization of the translational degrees of freedom. The calculation are carried out for the example of atomic motion in the field of counter-propagating laser...
Resonant scattering of ultrarelativistic electrons in the field of two strong pulsed laser waves is studied theoretically. Under the resonance, scattering of electron by an electron in the field of two laser pulsed waves is effectively divided into two consecutive processes of the first order similar to the laser-induced Compton process. Resonant scattering kinematics is qualitatively different in...
The new detector of acoustic oscillations of the medium suggested. The basic laws of detecting acoustic oscillations were investigated by means of computer and physical modeling.
Nonresonant electron-nucleus spontaneous bremsstrahlung (SB) in the field of two moderately strong pulsed laser waves is studied theoretically. The process is studied in detail within the interference kinematic region. This region is determined by scattering of particles in same plane at predetermined angles, at that stimulated absorption and emission of photons of external pulsed waves by an electron...
The laser resonator with the infinitely adjustable of output light is represented. Adjustment is performed in a wide range. The diameter of the laser output beam is changed at the adjustment. This resonator suitable for lasers of a wide range of frequencies, including for terahertz lasers.
We analyze the scattering of a plane TE electromagnetic wave of the visible range of wavelengths by a silver nano-cylinder with a concentric dielectric coating. The emerging plasmon resonances are treated using both the conventional presentation of the spatial distribution of the field amplitude nearby the object and by the spatial distribution of the Umov-Poynting vector. We demonstrate that application...
Dispersion characteristics and spatial field distributions in the photonic crystal waveguides and Bragg ones are considered. It is shown that these waveguides can be used as slow-wave systems in the THz vacuum electron devices.
This work describes the research and calculation of absorption and scattering cross sections of the three-layer nanoshell Au-SiO2-Au elliptical shape using the method of dipole equivalence in the near infrared region of the spectrum.
This paper presents results theoretical modeling of angular characteristics dual-layer gratings (gold-coated polycarbonate gratings) and optimization geometrical parameters such structures have been carried out for sensing applications in visible spectrum region.
We present theoretical analysis of intensity modulation response of analog fiber-optic links with direct intensity modulation and direct detection of the output optical signals. It is shown that the frequency chirp of laser light and the group velocity dispersion of electromagnetic waves in the optical fiber make a significant impact on the signal transmission. The output signals reveal ether power...
The review on the quantum electrodynamics (QED) processes proceeding in strong pulsed light fields, realized in modern powerful pulsed lasers is presented. Resonant and coherent processes of quantum electrodynamics in strong laser fields are considered. Following QED processes in the pulsed laser field are considered: resonant scattering of ultra relativistic electrons, resonance of exchange amplitude...
In optical experiments electromagnetic field manifests itself as a quantum-statistical object. Its state should be described with a statistical operator or with correlation functions calculated with it. A rather full description of field is provided with field amplitudes and simultaneous binary functions. Incidentally Glauber functions serve as a tool for diagnostics of field properties. The correlation...
In this paper, the stress effects on solidification microstructures during laser sintering of alloy powders are investigated, using a phase field approach. Coupling equations among phase, temperature, concentration and strain/stress are derived based on thermodynamic considerations. Thermal and concentration expansions, transformation dilatation, and strain deformation dependency on phase transformation...
The maxima of the acousto-optic interaction are determined for biaxial SrB4O7 crystals. As it is shown, the highest value of the acousto-optic figure of merit M2 is equal to 0.63–10−15s3/kg and achieved in the case of the isotropic diffraction of the electromagnetic wave propagating in [010] direction on the fast qausi-transversal acoustic wave propagating in direction with angular parameters θp =...
Modelling of degradation process in functional high-reliable temperature-sensitive Cu0.1Ni0.8Co0.2Mn1.9O4 ceramics is performed. It is shown that additives of NiO phases formed during sintering and localized near grain boundaries of ceramics suppress ageing process in these materials. This effect is character for monolithized fine-grain ceramics obtained due to thermal energy transformed during sintering...
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