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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-2160</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>Атомный частотный репер на основе переходов 4S1/2→4P1/2 в парах калия, помещенных в наноячейку</article-title><trans-title-group xml:lang="en"><trans-title>Atomic Frequency Reference Based on 4S 1/2→4P</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>2026</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2026</year></pub-date><volume>93</volume><issue>2</issue><fpage>159</fpage><lpage>164</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/2160">https://zhps.ejournal.by/jour/article/view/2160</self-uri><abstract><p>Изучены субдоплеровские резонансы, формируемые при сканировании частоты лазера в области перехода 4S1/2→4P1/2 на длине волны 770 нм в парах атомов K, помещенных в наноячейку. При толщинах паров атомов L = λ/2 = 385 нм и L = λ = 770 нм в спектре пропускания формируются субдоплеровские резонансы, которые расположены на несмещенных атомных переходах Fg = 1, 2→Fe = 1, 2, при этом амплитуды резонансов, наблюдаемых в наноячейке, пропорциональны амплитудам вероятностей соответствующих переходов. Показано, что наноячейка с толщиной паров L = λ = 770 нм может применяться как удобный частотный репер, привязанный к несмещенным частотам атомных переходов. Продемонстрированы преимущества предлагаемого частотного репера перед распространенным частотным репером на основе техники насыщенного поглощения.</p></abstract><trans-abstract xml:lang="en"><p>Sub-Doppler resonances formed by scanning the laser frequency in the region of the 4S1/2→4P1/2 transition at a wavelength of 770 nm in K atomic vapors placed in a nanocell were studied. For atomic vapor thicknesses of L = λ/2 = 385 nm and L = λ = 770 nm, sub-Doppler resonances are formed in the transmission spectrum, located at the unshifted atomic transitions Fg = 1, 2→Fe = 1, 2. The resonance amplitudes observed in the nanocell are proportional to the probability amplitudes of the corresponding transitions. It is shown that a nanocell with a vapor thickness of L = λ = 770 nm can be used as a convenient frequency reference, tied to the unshifted frequencies of the atomic transitions. The advantages of the proposed frequency reference over a commonly used frequency reference based on saturated absorption techniques are demonstrated.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наноячейка</kwd><kwd>частотный репер</kwd><kwd>субдоплеровские резонансы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nanocell</kwd><kwd>frequency reference</kwd><kwd>sub-Doppler resonances</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Комитета по высшему образованию и науке Республики Армения в рамках проекта N 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">T. Baluktsian, C. Urban, T. Bublat, H. Giessen, R. Löw, T. Pfau. Opt. Lett., 35 (2010) 1950—1952</mixed-citation><mixed-citation xml:lang="en">T. Baluktsian, C. Urban, T. Bublat, H. Giessen, R. Löw, T. Pfau. Opt. 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