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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-2430-2025-61-1-23-33</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-823</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Векторные пучки бесселева типа с квадратурным соотношением фаз электрического и магнитного полей</article-title><trans-title-group xml:lang="en"><trans-title>Vector Bessel-like beams with quadrature phases of electric and magnetic fields</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5550-1708</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хило</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khilo</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хило Николай Анатольевич – кандидат физико-математических наук, доцент, ведущий научный сотрудник</p><p>пр. Независимости, 68-2, 220072, Минск</p></bio><bio xml:lang="en"><p>Nikolai A. Khilo – Ph. D. (Physics and Mathematics), Associate Professor, Leading Researcher</p><p>68-2, Nezavisimosti Ave., 220072, Minsk</p></bio><email xlink:type="simple">n.khilo@dragon.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7543-3682</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белый</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Belyi</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белый Владимир Николаевич – академик Национальной академии наук Беларуси, доктор физико- математических наук, заведующий центром «Диагностические системы»</p><p>пр. Независимости, 68-2, 220072, Минск</p></bio><bio xml:lang="en"><p>Vladimir N. Belyi – Academician of the National Academy of Sciences of Belarus, Dr. Sc. (Physics and Mathematics), Head of the Center “Diagnostic systems”</p><p>68-2, Nezavisimosti Ave., 220072, Minsk</p></bio><email xlink:type="simple">v.belyi@dragon.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики имени Б. И. Степанова Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>03</month><year>2025</year></pub-date><volume>61</volume><issue>1</issue><fpage>23</fpage><lpage>33</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хило Н.А., Белый В.Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Хило Н.А., Белый В.Н.</copyright-holder><copyright-holder xml:lang="en">Khilo N.A., Belyi V.N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestifm.belnauka.by/jour/article/view/823">https://vestifm.belnauka.by/jour/article/view/823</self-uri><abstract><p>Рассмотрены особенности распространения векторных пучков Бесселя – Гаусса (БГ), отличительной чертой которых является квадратурное соотношение фаз электрического и магнитного полей. Выражение для векторных пучков БГ получены на основе общего подхода в виде линейной суперпозиции известных точных решений уравнений Максвелла. Путем подбора весовой функции суперпозиции найдены формулы для всех компонент электрического и магнитного поля БГ пучка, а также выражения для квадратичных функций поля, таких как линейная плотность энергии, импульса и момента импульса по направлению распространения пучка. Рассмотрен важный частный случай, когда весовые функции суперпозиции не зависят от азимутального модового индекса m вихревого пучка. Для этого случая найдено выражение для отношения линейной плотности момента импульса к линейной плотности энергии БГ пучка с квадратурным соотношением фаз электрического и магнитного полей. Из полученного выражения следует, что линейная плотность момента импульса на один фотон для непараксиального пучка значительно отличается от величины ћ(m + 1) для больших углов конуса (порядка нескольких десятков градусов). Данный результат важен, в частности, для корректной оценки углового момента поля на основе измерений фотоприемниками с прямым детектированием азимутального индекса m, которые разрабатываются в последнее время. Также показано, что при увеличении угла конуса БГ пучка его поляризация отличается от круговой, а продольная компонента возрастает. При этом функциональная зависимость поперечных и продольной компонент от радиальной координаты различная. Полученные результаты важны при разработке компактных элементов систем оптической связи, микроскопии, лазерных твизеров и др.</p></abstract><trans-abstract xml:lang="en"><p>The peculiarities of propagation of vector Bessel – Gaussian (BG) beams, the distinguishing feature of which is the quadrature of phases of electric and magnetic fields, are considered. The expression for vector BG beams is obtained on the basis of common approach in a form of linear superposition of known accurate solutions of the Maxwell equations. By selection of weight function of superposition there are found the equations for all components of electric and magnetic field of the BG beam, and also expressions for square field functions, such as linear density of energy, pulse and pulse moments along the direction of beam propagation. The particular case is considered when weight functions of the superposition do not depend on azimuthal mode index m of the vortex beam. For this case the expression is found for the ratio of linear density of the pulse moment to linear density of BG beam energy with a quadrature of electric and magnetic fields. From the equation obtained it follows that linear density of the pulse moment per one photon for non-paraxial beams essentially differs from the value ћ(m + 1) for large cone angles (of about several tens of degrees). Particularly, this result is important for the correct estimation of angular momentum of the field on the basis of measurement by the photoreceivers with direct detection of azimuthal index m, which are being developed in the recent time. It is also shown that when increasing the cone angle of BG beam its polarization differs from angular one, and the longitudinal component increases. Here the functional dependence of transverse and longitudinal components on radial coordinate is different. The obtained results are important when developing compact elements for the optical communication systems, microscopy, laser tweezers and others.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>непараксиальные пучки Бесселя – Гаусса</kwd><kwd>угловой орбитальный момент</kwd><kwd>дислокации волнового фронта</kwd></kwd-group><kwd-group xml:lang="en"><kwd>non-paraxial Bessel – Gaussian beams</kwd><kwd>angular orbital momentum</kwd><kwd>wavefront dislocation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Dorn, R. Sharper Focus for a Radially Polarized Light Beam / R. Dorn, S. Quabis, G. Leuchs // Physical Review Letters. – 2003. – Vol. 91, № 23. – P. 233901. https://doi.org/10.1103/physrevlett.91.233901</mixed-citation><mixed-citation xml:lang="en">Dorn, R. Sharper Focus for a Radially Polarized Light Beam / R. Dorn, S. Quabis, G. 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