Персона: Гараев, Дамир Ильдарович
Загружается...
Email Address
Birth Date
Научные группы
Организационные подразделения
Организационная единица
Институт нанотехнологий в электронике, спинтронике и фотонике
Институт ИНТЭЛ занимается научной деятельностью и подготовкой специалистов в области исследования физических принципов, проектирования и разработки технологий создания компонентной базы электроники гражданского и специального назначения, а также построения современных приборов на её основе.
Наша основная цель – это создание и развитие научно-образовательного центра мирового уровня в области наноструктурных материалов и устройств электроники, спинтроники, фотоники, а также создание эффективной инновационной среды в области СВЧ-электронной и радиационно-стойкой компонентной базы, источников ТГц излучения, ионно-кластерных технологий материалов.
Статус
Фамилия
Гараев
Имя
Дамир Ильдарович
Имя
6 results
Результаты поиска
Теперь показываю 1 - 6 из 6
- ПубликацияТолько метаданныеOn polarization of Smith-Purcell radiation from a photonic crystal slab(2024) Garaev, D. I.; Sergeeva, D. Y.; Tishchenko, A. A.; Гараев, Дамир Ильдарович; Сергеева, Дарья Юрьевна; Тищенко, Алексей Александрович
- ПубликацияОткрытый доступTHZ RADIATION BY FREE ELECTRONS FROM 2D PHOTONIC CRYSTALS AND METASURFACES(НИЯУ МИФИ, 2023) Tishchenko, A. A.; Sergeeva, D. Yu.; Garaev, D. I.; Гараев, Дамир Ильдарович; Сергеева, Дарья Юрьевна; Тищенко, Алексей АлександровичTerahertz radiation sources based on the radiation of electrons in external fi elds attracts the attention of researches due to the huge energy stored in relativistic electron beams. Even a little part of this energy, being radiated, makes it possible to produce powerful radiation in various parts of spectrum, including terahertz one, which is exploited in gyrotrons, magnetrons, orotrons etc. Besides its customary applications in powerful radiation sources and in non-destructive diagnostics of relativistic electron beams, the last decade SPR is intensively investigated for more exotic structures, like plasmonic crystals [1-3], graphene nanoscale gratings [4, 5], metasurfaces [6, 7]. These novel structures are widely investigated today due to their tunability, opportunity to tailor the properties of the surfaces, which results in developing novel modulators [8] and fi lters [9] — the key elements in applications of modern optics.
- ПубликацияТолько метаданныеOn the Reducing the Number of Equations in the Problem of Radiation of a Cluster of Interacting particles О понижении числа уравнении в задаче об излучении кластера взаимодеиствующих частиц(2020) Tishchenko, A. A.; Sergeeva, D. Yu.; Garaev, D. I.; Тищенко, Алексей Александрович; Сергеева, Дарья Юрьевна; Гараев, Дамир Ильдарович© Санкт-Петербургский государственный университет, 2020In this paper we investigate analytically polarization radiation excited due to interaction of an electron with a cluster of coupled subwavelength particles. The results are valid both for nonrelativistic and for relativistic charged particles. The expression for the Fourier image of radiation field has been obtained, which allows direct calculating spectral and angular density of the radiated energy. In general case, to find the radiation field with taking into account the interaction between particles, it is necessary to solve a system of N! self-consistent tensor equations, where N is the number of particles in the cluster. We suggest the algorithm for reducing the system of N! equations to N equations. The reduction in the number of equations is achieved through the calculation of the fields at the each point in which the dipole moment is, rather than through calculation of the fields from the every source. This facilitates considerably the finding solutions in problems of radiation for the clusters of particles.
- ПубликацияТолько метаданныеTheory of Smith-Purcell radiation from a 2D array of small noninteracting particles(2021) Garaev, D. I.; Sergeeva, D. Y.; Tishchenko, A. A.; Гараев, Дамир Ильдарович; Сергеева, Дарья Юрьевна; Тищенко, Алексей Александрович© 2021 American Physical Society.We construct the first-principles theory for the scattering of the Coulomb field of a fast electron traveling along an array of nano- or microparticles. The electron's trajectory is arbitrarily oriented in the plane parallel to the surface. We show that Smith-Purcell radiation accompanying this process results in very rich diffraction patterns, which differ dramatically from the ones for conventional diffraction gratings; a numerical analysis was made for THz frequencies. The generalized Smith-Purcell dispersion relation has been derived; it describes the link between frequency, two periods of the structure, the electron's velocity, and the angle of radiation with maximal intensity. The unique spatial distribution of the generated light can form the basis for the generation of structured-light electron-driven photon sources.
- ПубликацияТолько метаданныеPolarized grating transition radiation from a 2D photonic crystal(2022) Sergeeva, D. Y.; Garaev, D. I.; Tishchenko, A. A.; Сергеева, Дарья Юрьевна; Гараев, Дамир Ильдарович; Тищенко, Алексей Александрович
- ПубликацияТолько метаданныеFocusing of Smith-Purcell radiation from a two-dimensional particle array in the prewave zone(2023) Garaev, D. I.; Sergeeva, D. Y.; Tishchenko, A. A.; Гараев, Дамир Ильдарович; Сергеева, Дарья Юрьевна; Тищенко, Алексей Александрович