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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-2324</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>Лазерно-индуцированная флуоресценция в атомарных парах цезия, вызванная  излучением с длиной волны 456 нм</article-title><trans-title-group xml:lang="en"><trans-title>Laser-Induced Fluorescence in Cesium Atomic Vapors Caused by 456 nm Radiation</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>Саргсян</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sargsyan</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аштарак </p></bio><bio xml:lang="en"><p>Ashtarak </p></bio><email xlink:type="simple">sarmeno@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физических исследований НАН Республики Армения</institution><country>Армения</country></aff><aff xml:lang="en"><institution>Institute for Physical Research of the National Academy of Sciences of Armenia</institution><country>Armenia</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>08</day><month>09</month><year>2026</year></pub-date><volume>93</volume><issue>4</issue><fpage>480</fpage><lpage>484</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Саргсян А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Саргсян А.</copyright-holder><copyright-holder xml:lang="en">Sargsyan 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://zhps.ejournal.by/jour/article/view/2324">https://zhps.ejournal.by/jour/article/view/2324</self-uri><abstract><p>С помощью узкополосного лазерного излучения с длиной волны 456 нм, находящегося в резонансе с переходом 6S1/2→7P3/2 атомов цезия, изучена лазерно-индуцированная флуоресценция (ЛИФ) в диапазоне длин волн 400—1000 нм. Используемая Т-образная ячейка длиной L = 1 см из технического сапфира, содержащая пары атомов цезия, способна успешно функционировать до температур 450 °C. Регистрируя сигнал ЛИФ, можно оценить количество остаточных атомарных паров Rb. Ячейка на основе цезия может служить эффективным оптическим фильтром-преобразователем синего излучения в красное.</p></abstract><trans-abstract xml:lang="en"><p>Laser-induced fluorescence (LIF) in 400–1000 nm wavelength range was studied using narrow-band laser radiation with the wavelength of 456 nm, resonating with 6S1/2→7P3/2 transition of Cs atoms. A T-shaped cell made entirely of technical sapphire, L = 1 cm in length, containing cesium vapors and capable of operating successfully at temperatures up to 450°C, was used. By recording the LIF signal, one can, estimate the amount of residual Rb vapor. The cesium-based cell can serve as an effective optical filter-converter, converting blue radiation to red one.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>флуоресценция</kwd><kwd>цезий</kwd><kwd>Т-образная ячейка</kwd><kwd>лазерно-индуцированная флуоресценция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fluorescence</kwd><kwd>cesium</kwd><kwd>T-shaped cell</kwd><kwd>laser-induced fluorescence</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа поддержана Комитетом по высшему образованию и науке Министерства образования, науки и техники Республики Армения (проект 25RG-1C008).</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">I. Barmes, S. Witte, K. S. E. Eikema. Phys. Rev. Lett., 111 (2013) 023007</mixed-citation><mixed-citation xml:lang="en">I. Barmes, S. Witte, K. S. E. Eikema. Phys. Rev. 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