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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">10.29235/1561-2430-2024-60-2-146-152</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-781</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>Дифракция смещенных гауссовых световых пучков на ультразвуке в кристаллах парателлурита</article-title><trans-title-group xml:lang="en"><trans-title>Diffraction of displaced Gaussian light beams on ultrasound in paratellurite crystals</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кулак</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulak</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кулак Геннадий Владимирович – доктор физико-математических наук, профессор, профессор кафедры физики и математики</p><p>ул. Студенческая, 28, 247760, Мозырь</p></bio><bio xml:lang="en"><p>Gennadii V. Kulak – Dr. Sc. (Physics and Mathematics), Professor, Professor of the Department of Physics and Mathematics</p><p>28, Studentskaya Str., 247760, Mozyr</p></bio><email xlink:type="simple">g.kulak57@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ропот</surname><given-names>П. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ropot</surname><given-names>P. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ропот Петр Иосифович – кандидат физико-математических наук, доцент, ведущий научный сотрудник</p><p>пр. Независимости, 68-2, 220072, Минск</p></bio><bio xml:lang="en"><p>Peter I. Ropot – Ph. D. (Physics and Mathematics), Associate Professor, Leading Researcher</p><p>68-2, Nezavisimosti Ave., 220072, Minsk</p></bio><email xlink:type="simple">p.ropot@dragon.bas-net.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шакин</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shakin</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шакин Олег Васильевич – доктор технических наук, профессор, профессор кафедры конструирования и технологии электронных и лазерных средств</p><p>ул. Большая Морская, 67, 190000, Санкт-Петербург</p></bio><bio xml:lang="en"><p>Oleg V. Shakin – Dr. Sc. (Engineering), Professor, Professor of the Department of Design and Technology of Electronic and Laser Means</p><p>67, Bol’shaya Morskaya Str., 190000, Saint Petersburg</p></bio><email xlink:type="simple">oshakin@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Мозырский государственный педагогический университет имени И. П. Шамякина</institution></aff><aff xml:lang="en"><institution>Mozyr State Pedagogical University named after I. P. Shamyakin</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><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><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Государственный университет аэрокосмического приборостроения</institution></aff><aff xml:lang="en"><institution>State University of Aerospace Instrumentation</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>09</day><month>07</month><year>2024</year></pub-date><volume>60</volume><issue>2</issue><fpage>146</fpage><lpage>152</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кулак Г.В., Ропот П.И., Шакин О.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Кулак Г.В., Ропот П.И., Шакин О.В.</copyright-holder><copyright-holder xml:lang="en">Kulak G.V., Ropot P.I., Shakin O.V.</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/781">https://vestifm.belnauka.by/jour/article/view/781</self-uri><abstract><p>Исследована брэгговская дифракция смещенных гауссовых световых пучков на медленной сдвиговой ультразвуковой волне в кристаллах парателлурита, в которых осуществляется эффективная перекачка энергии пучка из нулевого дифракционного порядка в первый. Установлено, что для оптимизации энергообмена дифрагированных световых пучков в рассматриваемой геометрии акустооптического взаимодействия необходимо использовать циркулярно-поляризованные световые пучки. Показано, что дифрагированные пучки имеют форму смещенных гауссовых пучков, пространственная структура которых определяется параметром смещения падающего пучка и мощностью ультразвука.</p></abstract><trans-abstract xml:lang="en"><p>The Bragg diffraction of displaced Gaussian light beams on a slow shear ultrasonic wave in paratellurite crystals, in which the beam energy is efficiently transferred from the zero diffraction order to the first, is investigated. It is established that circularly polarized light beams should be used to optimize the energy exchange of diffracted light beams in the considered geometry of acousto-optic interaction. It is shown that the diffracted beams have the form of displaced Gaussian beams, the spatial structure of which is determined by the displacement parameter of the incident beam and the ultrasound power.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>смещенный гауссов пучок</kwd><kwd>брэгговская дифракция света</kwd><kwd>дифракционная эффективность</kwd><kwd>одноосный гиротропный кристалл</kwd><kwd>кристалл парателлурита</kwd></kwd-group><kwd-group xml:lang="en"><kwd>displaced Gaussian beam</kwd><kwd>Bragg diffraction of light</kwd><kwd>diffraction efficiency</kwd><kwd>uniaxial gyrotropic crystal</kwd><kwd>paratellurite crystal</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках задания по программе Союзного государства «Компонент-Ф» (НИР шифр «Бессель» Российской Федерации и Республики Беларусь).</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of the task under the program of the Union State “Component-F” (research code “Bessel” of the Russian Federation and the Republic of Belarus).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Linfoot, E. 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