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Information × Registration Number 0223U002533, 0117U000744 , R & D reports Title Fundamentals of new optical methods and tools for precision measurement of physical characteristics of objects 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 dedicated to fundamental research in the field of laser dynamics, physics of photonic crystals and digital optics, which are devoted to development of optical methods for precise measurements of the physical characteristics of objects. A new multilayer metal-dielectric nanostructure characterized by a narrow angular response of the reflection coefficient is proposed. Conditions for the existence of narrow spectral-angular resonances, the optical fields of which are localized in the last dielectric layer, and relatively wide Tamm resonances, the fields of which are localized at the metal-dielectric interface, have been found. One-dimensional resonant structures for the creation of highly sensitive refractive sensors were calculated and manufactured. The transverse dynamics of the optical field created in a single-frequency laser with a moderate Fresnel number was studied. The existence of vortex clusters that constantly rotate spontaneously in a laser with a frequency-degenerate cavity is numerically and experimentally demonstrated in a laser-like two-wave mixing photorefractive oscillator with a cavity and controlled aperture flat mirror. The observed rotational dynamics of two-, three-, and four-vortex clusters is explained within the general model of nonlinear structure formation. An algorithm for the synthesis of intra-resonator two-dimensional phase diffraction elements for the formation of laser beams with a given spatial distribution of intensity has been developed. Product Description popup.authors Ilchenko Svitlana G. Kuzmenko Oleksandr V. Lymarenko Ruslan Anatoliyovych Ostroukh Oleksandr P. Frolov Sergiy Volodymyrovych Yaparov Volodymyr Volodymyrovych popup.nrat_date 2023-02-22 Close