Results

In the recent three years, the following results in these lines of research were obtained:

• STRP staff members developed the theory of sliding-mode  microwave plasma waveguides formed by high-power UV KrF laser radiation in atmospheric air;  the theory of resonance-enhanced multi-photon ionization of oxygen molecules (REMPI) under KrF laser radiation, which proceeds through two-photon excitation of the intermediate Rydberg state of O2 molecules followed by its photoionization; the theory of electron attachment kinetics in a weakly ionized laser plasma in the air in a DC external electric field;
• the theory of dissipative and dissipationless solitons in stimulated Raman backscattering of a laser pulse in underdense plasma and the theory of self-phase  modulation in SBS compression of a laser pulse;
•  the theory of generation of subpicosecond mode-locked pulses in a multi-section InGaN laser diode in the regime with a large pulse energy was developed; a new mechanism was proposed of the enhanced longitudinal mode spacing in the GaN diode, which is based on the resonance excitation of plasma waves in spatially separated two-dimensional layers of electrons and holes;  
• the effect of Auger processes in the heating of carriers in quantum-dot optical amplifiers was studied; it was shown that this heating could significantly affect the amplification dynamics and, in particular, the amplification recovery time;
• the theory of enhanced electron photoemission from metal nanoantennas was developed. This effect was proposed to be used for the development of new  plasmon photoconducting metamaterials, near- and medium-IR range photodetectors, for enhancement of the efficiency of solar cells;
• the prospect of using plasmon nanoparticles to control the input of radiation in solar cells was investigated. It was first shown that aluminium as a nanoparticle material could have significant advantages in photovoltaic applications as compared with gold and silver and, in particular, in organic solar cells;
• fundamental aspects of the theory of dispersion in the nonlinear conductance of  metal island films were developed;
• analytical expressions for the dispersion of the number of particles in the quantum states of canonical ensembles of ideal Bose and Fermi gases were obtained;
• the quantum-optical theory of the multi-mode generation in lasers, which takes into account the spatial dependence in the interaction of atoms with the standing cavity mode, was developed; the mechanism of noise suppression in a multi-mode laser was studied.