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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-297</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>Статьи</subject></subj-group></article-categories><title-group><article-title>ДВУКРАТНАЯ БРЭГГОВСКАЯ ДИФРАКЦИЯ БЕССЕЛЕВЫХ СВЕТОВЫХ ПУЧКОВ НА УЛЬТРАЗВУКЕ В ОДНООСНЫХ ГИРОТРОПНЫХ КРИСТАЛЛАХ</article-title><trans-title-group xml:lang="en"><trans-title>TWO-STAGE BRAGG DIFFRACTION OF BESSEL LIGHT BEAMS BY ULTRASOUND IN UNIAXIAL GYROTROPIC 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>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><email xlink:type="simple">v.belyi@dragon.bas-net.by</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>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><email xlink:type="simple">noemail@neicon.ru</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>Крох</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Krokh</surname><given-names>G. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</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>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><email xlink:type="simple">noemail@neicon.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>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><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики НАН Беларуси</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Insitute of Physics of National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Мозырский государственный педагогический университет им. 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-3"><aff xml:lang="ru"><institution>Санкт-Петербургский 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>2018</year></pub-date><pub-date pub-type="epub"><day>10</day><month>03</month><year>2020</year></pub-date><volume>85</volume><issue>4</issue><fpage>673</fpage><lpage>678</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Белый В.Н., Кулак Г.В., Крох Г.В., Ропот П.И., Шакин О.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Белый В.Н., Кулак Г.В., Крох Г.В., Ропот П.И., Шакин О.В.</copyright-holder><copyright-holder xml:lang="en">Belyi V.N., Kulak G.V., Krokh 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://zhps.ejournal.by/jour/article/view/297">https://zhps.ejournal.by/jour/article/view/297</self-uri><abstract><p>Теоретически и экспериментально исследована неколлинеарная двукратная акустооптическая дифракция бесселевых световых пучков на ультразвуке в одноосных гиротропных кристаллах. Установлено, что при распространении бесселевого светового пучка вдоль оптической оси кристалла дифрагированные световые пучки ±1-го порядка располагаются симметрично относительно падающего и имеют примерно одинаковую интенсивность. При падении светового бесселева пучка под углом Брэгга и вблизи оптической оси также наблюдается двукратная брэгговская дифракция, однако интенсивности дифрагированных пучков +1-го и +2-го порядков значительно различаются. </p></abstract><trans-abstract xml:lang="en"><p>Herein, the non-collinear acousto-optical two-stage diffraction of Bessel light beams by ultrasound in uniaxial gyrotropic crystals is theoretically and experimentally investigated. It is established that when Bessel light beams propagate along the optical axis of the crystal, the diffracted light beams of the ±1-th orders arrange symmetrically to the incident beam and have virtually the same intensity. When a Bessel light beam falls at the Bragg angle and near the optical axis, the two-stage Bragg diffraction is also observed, but the intensities of the diffracted beams of the +1-th and +2-th orders differ significantly from each other. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>акустооптическое взаимодействие</kwd><kwd>одноосный гиротропный кристалл</kwd><kwd>бесселев световой пучок</kwd><kwd>двукратная брэгговская дифракция</kwd><kwd>acousto-optical interaction</kwd><kwd>uniaxial gyrotropic crystal</kwd><kwd>Bessel light beam</kwd><kwd>two-stage Bragg diffraction</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">В. И. Балакший, В. Н. Парыгин, Л. Е. Чирков. Физические основы акустооптики, Москва, Радио и связь (1985)</mixed-citation><mixed-citation xml:lang="en">В. И. Балакший, В. Н. Парыгин, Л. Е. Чирков. 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