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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-2014</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>АТОМНАЯ СПЕКТРОСКОПИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ATOMIC SPECTROSCOPY</subject></subj-group></article-categories><title-group><article-title>Спектроскопия линии D2 атомов калия в оптической наноячейке</article-title><trans-title-group xml:lang="en"><trans-title>D2-Line Spectroscopy of Potassium Atoms in an Optical Nanocell</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 Национальной академии наук Армении</institution></aff><aff xml:lang="en"><institution>Institute for Physical Research of the National Academy of Sciences of Armenia</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>11</month><year>2025</year></pub-date><volume>92</volume><issue>6</issue><fpage>713</fpage><lpage>718</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Саргсян А., 2025</copyright-statement><copyright-year>2025</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/2014">https://zhps.ejournal.by/jour/article/view/2014</self-uri><abstract><p>Исследованы особенности спектров пропускания лазерного излучения линии D2 через наноячейку с варьируемой толщиной столба паров атомов калия в интервале 300—2000 нм. Показано, что при малых интенсивностях лазерного излучения наблюдаются сужение спектра резонансного пропускания при толщинах L = (2n + 1)λ/2 (n — целое число) и уширение спектра при толщинах L = nλ. С увеличением интенсивности лазерного излучения в спектре пропускания наноячейки появляются селективные по атомным скоростям оптические резонансы, которые расположены на атомных переходах и имеют спектральную ширину в 13 раз меньше доплеровской ширины. Проведено сравнение резонансов в наноячейке с резонансами, формируемыми известной техникой насыщенного поглощения. Полученные результаты могут быть использованы для формирования узких оптических резонансов в миниатюрных устройствах, содержащих пары атомов.</p></abstract><trans-abstract xml:lang="en"><p>The features of the transmission spectra of laser radiation through a nanocell with a variable thickness of the potassium atom vapor column in the range of 300–2000 nm of the D2-line are investigated. It is shown that at low laser radiation intensities, a narrowing of the resonance transmission spectrum is observed at thicknesses of L = (2n + 1)λ/2 (n is an integer) and a broadening of the spectrum at thicknesses of L = nλ. With an increase in the laser radiation intensity, velocity selective optical pumping resonances appear in the transmission spectrum of the nanocell. They are located at atomic transitions and have a spectral width 13 times smaller than the Doppler width. A comparison of the resonances in the nanocell with the resonances formed by the known saturated absorption technique is carried out. The obtained results can be used to form narrow optical resonances in miniature devices containing atomic vapors. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>наноячейка</kwd><kwd>спектр пропускания</kwd><kwd>оптический резонанс</kwd><kwd>атомный переход</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nanocell</kwd><kwd>transmission spectrum</kwd><kwd>optical resonance</kwd><kwd>atomic transition</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Автор благодарит Д. Саркисяна за полезные обсуждения. Работа выполнена при финансовой поддержке Комитета по высшему образованию и науке Республики Армения (проект № 1-6/IPR).</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">J. Kitching. Appl. Phys. Rev., 5 (2018) 031302(1—38)</mixed-citation><mixed-citation xml:lang="en">J. Kitching. Appl. Phys. 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