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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">mireabulletin</journal-id><journal-title-group><journal-title xml:lang="ru">Russian Technological Journal</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Technological Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2782-3210</issn><issn pub-type="epub">2500-316X</issn><publisher><publisher-name>RTU MIREA</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32362/2500-316X-2017-5-3-41-50</article-id><article-id custom-type="elpub" pub-id-type="custom">mireabulletin-61</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>К 70-ЛЕТИЮ МИРЭА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>To the 70th anniversary of MIREA</subject></subj-group></article-categories><title-group><article-title>ДИНАМИЧЕСКОЕ ПЕРЕКЛЮЧЕНИЕ ПОЛЯРИЗАЦИИ СЕГНЕТОЭЛЕКТРИКА КОРОТКИМ ТЕРАГЕРЦОВЫМ ИМПУЛЬСОМ</article-title><trans-title-group xml:lang="en"><trans-title>TRANSIENT REVERSAL OF FERROELECTRIC POLARIZATION INDUCED BY TERAHERTZ ELECTROMAGNETIC PULSE</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>Мишина</surname><given-names>Е. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Mishina</surname><given-names>E. D.</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>Гришунин</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Grishunin</surname><given-names>K. A.</given-names></name></name-alternatives><email xlink:type="simple">grishunin@mirea.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский технологический университет (МИРЭА)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Technological University (MIREA)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>28</day><month>06</month><year>2017</year></pub-date><volume>5</volume><issue>3</issue><fpage>41</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мишина Е.Д., Гришунин К.А., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Мишина Е.Д., Гришунин К.А.</copyright-holder><copyright-holder xml:lang="en">Mishina E.D., Grishunin K.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://www.rtj-mirea.ru/jour/article/view/61">https://www.rtj-mirea.ru/jour/article/view/61</self-uri><abstract><p>В работе представлены результаты исследования сверхбыстрого нелинейно-оптического отклика тонкой пленки (Ba0.8Sr0.2)TiO3 (001) на импульс электромагнитного поля терагерцовой частоты, длительностью, равной периоду колебаний такого импульса, и амплитудой до 500 кВ/см. Нелинейно-оптический отклик являлся мерой сегнетоэлектрической поляризации. Начальная поляризация пленок перпендикулярна их плоскости, терагерцовое поле ориентировано в плоскости пленки. Показано, что во время действия импульса сегнетоэлектрическая поляризация следует за приложенным полем во времени и переключается вдоль направления поля. После окончания действия терагерцового импульса наблюдались долгоживущие (&gt;20 пс) осцилляции, частота которых совпадает с частотой мягкой моды в этом материале. Микроскопическое описание нелинейной восприимчивости объясняет резонансное поведение нелинейно-оптического отклика в терагерцовом диапазоне.</p></abstract><trans-abstract xml:lang="en"><p>The paper presents the results of an investigation of the ultrafast nonlinear-optical response of a thin film (Ba0.8Sr0.2)TiO3(001) to a terahertz frequency electromagnetic field pulse with duration near 1ps and electric field up to 500 kV/cm. Nonlinear optical response was a method to detect the ferroelectric polarization. The initial spontaneous polarization was perpendicular to the film, terahertz electric field was in-plane of the film. We demonstrated that ferroelectric polarization repeats the profile of the THz pulse during its impact and switches along the field direction. After the end of the THz pulse, the longlive (&gt;20ps) oscillations were observed. The frequency of these oscillations correspond to the frequency of the soft mode in this material. Microscopic discription of nonlinear susceptibility explains the resonant behavior of nonlinear-optical response in THz range.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>терагерцовое излучение</kwd><kwd>сегнетоэлектрик</kwd><kwd>переключение поляризации</kwd><kwd>генерация второй оптической гармоники</kwd></kwd-group><kwd-group xml:lang="en"><kwd>terahertz radiation</kwd><kwd>ferroelectric</kwd><kwd>polarization switching</kwd><kwd>second harmonic generation</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">De Jong J.A., Razdolski I., Kalashnikova A.M., Pisarev R.V., Balbashov A.M., Kirilyuk A., Rasing Th., Kimel A.V. Coherent control of the route of an ultrafast magnetic phase transition via low-amplitude spin precession // Phys. Rev. Lett. 2012. V. 108, № 15. 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