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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</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">10.29235/1561-8323-2026-70-2-108-118</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1300</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>Моделирование сверхизлучения в резонаторе в условиях дрейфа частоты, вызванного резонансной нелинейностью</article-title><trans-title-group xml:lang="en"><trans-title>Modeling of superradiance in a resonator under conditions of frequency drift caused by resonant nonlinearity</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1373-5113</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Tимощенко</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Timoshchenko</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тимощенко Елена Валерьевна – канд. физ.-мат. наук,доцент, заведующий кафедрой</p><p>ул. Космонавтов, 1, 212022, Могилев</p></bio><bio xml:lang="en"><p>Timoshchenko Elena V. – Ph. D. (Physics and Mathematics), Associate Professor, Head of the Departmen</p><p>1, Kosmonavtov Str., 212022, Mogilev</p></bio><email xlink:type="simple">evtima@gmail.com</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>Юревич</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yurevich</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юревич Владимир Антонович – д-р физ.-мат. наук,профессор</p><p>пр. Шмидта, 3, 212027, Могилев</p></bio><bio xml:lang="en"><p>Yurevich Vladimir A. – D. Sc. (Physics and Mathematics), Professor</p><p>3, Schmidt Ave., 212027, Mogilev</p></bio><email xlink:type="simple">va_yurevich@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Могилевский государственный университет имени А. А. Кулешова</institution></aff><aff xml:lang="en"><institution>Mogilev State A. Kuleshov University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет пищевых и химических технологий</institution></aff><aff xml:lang="en"><institution>Belarussian State University of Food and Chemical Technologies</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>04</day><month>05</month><year>2026</year></pub-date><volume>70</volume><issue>2</issue><fpage>108</fpage><lpage>118</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Tимощенко Е.В., Юревич В.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Tимощенко Е.В., Юревич В.А.</copyright-holder><copyright-holder xml:lang="en">Timoshchenko E.V., Yurevich V.A.</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://doklady.belnauka.by/jour/article/view/1300">https://doklady.belnauka.by/jour/article/view/1300</self-uri><abstract><p>Ha основе нескольких модификаций уравнений Максвелла–Блоха проанализированы особенности излучения импульсных лазеров при когерентном взаимодействии света и усиливающей среды с резонансной фазовой нелинейностью. Оригинальность анализа представлена учетом взаимосвязанных факторов неустойчивости фазового соотношения светового поля и отклика среды, обусловленных диполь-дипольным взаимодействием и вкладом квазирезонансной поляризованности. Для описания режима сверхизлучения уточнены полуаналитические выражения переменных отклика в схеме формализма вектора Блоха. Различные приближения исходной модели представлены системами кинетических уравнений для переменных поля и отклика среды, а также нелинейным осцилляторным уравнением для полярного угла вектора Блоха. Моделирование когерентного эффекта сверхизлучения в резонаторе указало на высокую критичность временнόй структуры сверхизлучения по отношению к резонансной нелинейности материального отклика. Показано, что в условиях нелинейности типичная для сверхизлучения нутационная структура интенсивности преобразуется в контрастную квазипериодическую модуляцию заднего фронта основного импульса в субпикосекундном диапазоне. Расчетный анализ процесса сверхизлучения в резонаторе выполнен для параметров систем квантовых точек в полупроводниковых наногетероструктурах. Такие системы рассматриваются как перспективные для применения в компактных устройствах оптической электроники и фотоники.</p></abstract><trans-abstract xml:lang="en"><p>Several modifications of the Maxwell–Bloch equations are presented for analyzing the emission characteristics of pulsed lasers. The analysis is performed under the condition of coherent interaction between light and a gain medium with resonant phase nonlinearity. For the first time, the interrelated factors of instability of the phase relationship of the light field and the response of the medium, caused by the dipole-dipole interaction and the contribution of quasi-resonant polarization, are taken into account. To describe the superradiance (SR) regime, semi-analytical expressions for the response variables in the Bloch vector formalism are refined. Various approximations of the original model are represented by systems of kinetic equations for the field and response variables of the medium, as well as a nonlinear oscillatory equation for the polar angle of the Bloch vector. Modeling of the coherent SR effect in a resonator showed that the temporal structure of SR is extremely sensitive to the resonant nonlinearity of the material response. It is shown that under nonlinear conditions, the typical nutational intensity structure of synchrotron radiation is transformed into a contrasting quasi-periodic modulation of the trailing edge of the main pulse in the subpicosecond range. A computational analysis of the synchrotron radiation process in a resonator is performed for the parameters of semiconductor quantum dot systems in nanoheterostructures. Such systems are considered promising for use in compact optical electronics and photonics devices.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>резонансная нелинейность</kwd><kwd>когерентные оптические эффекты</kwd><kwd>сверхизлучение</kwd><kwd>формализм вектора Блоха</kwd><kwd>квантоворазмерные структуры</kwd></kwd-group><kwd-group xml:lang="en"><kwd>resonant nonlinearity</kwd><kwd>coherent optical effects</kwd><kwd>superradiance</kwd><kwd>Bloch vector formalism</kwd><kwd>quantum-dimensional structures</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">Васильев, П. П. Фемтосекундное сверхизлучение в полупроводниковых лазерах: аномальная внутренняя генерация второй гармоники / П. П. Васильев, А. Н. Путилин, А. Б. Сергеев // Квантовая электроника. – 2016. – Т. 46, № 10. – С. 888–890.</mixed-citation><mixed-citation xml:lang="en">Vasil’ev P. P., Putilin A. 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