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Information × Registration Number 0223U002537, 0118U003470 , R & D reports Title Diffraction and photonic crystalline structures: fundamental properties and applications popup.stage_title Head Taranenko Victor Borysovych, Доктор фізико-математичних наук Registration Date 22-02-2023 Organization International center "Institute of applied optics" National academy of science popup.description2  The project is devoted to fundamental theoretical and experimental research of laser dynamics, physics of photonic crystals and digital optics, which are aimed at the development of new optical methods and elements. New scientific results about the spatial dynamics and self-organization of multimode lasers was obtained. Rotating strongly coupled optical vortex clusters that spontaneously form in a laser with a frequency-degenerate resonator were investigated. The dynamics of light polarization of a quasi-isotropic laser with weak loss anisotropy and a moderate Fresnel number, which includes the competition of orthogonally polarized transverse modes, is studied. The possibility of spontaneous formation of vector modes of the first, second, and third orders, which reveal the polarization structure of the so-called full Poincaré beams, controlled transformations of the polarization structure of the laser field, as well as changes in the dynamics of its rotation. Two new types of intra-resonator angular selectors are proposed, designed for the selection of paraxial laser modes and increasing the brightness of laser radiation, namely: a two-dimensional diffractive metamirror, which has the effect of super-collimation (increasing the intensity of the axial components of the angular spectrum of the beam) and a multilayer metal-dielectric a nanostructure that has extraordinary spectral-angular filtering properties. It is developed optical-digital method of object recognition that is insensitive to changes in the scale and rotation of objects. Product Description popup.authors Ilchenko Svitlana G. Kuzmenko Oleksandr V. Lymarenko Ruslan Anatoliyovych Savchuk Alla V. Yaparov Volodymyr Volodymyrovych popup.nrat_date 2023-02-22 Close