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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-1401</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>ЛЮМИНЕСЦЕНЦИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LUMINESCENCE</subject></subj-group></article-categories><title-group><article-title>Верификация линий в спектрах люминесценции фторфосфатных стекол, допированных ионами иттербия и тулия, по степени нелинейности протекающих ап-конверсионных процессов</article-title><trans-title-group xml:lang="en"><trans-title>Line Verification in the Luminescence Spectra of Fluorophosphate Glass Doped with Yterbium and Thulium Ions by the Power of Nonlinearity of Up-Conversion Processes</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>Корольков</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Korolkov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ходасевич</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khodasevich</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пиотух</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Piotukh</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Грабчиков</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Grabtchikov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колобкова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolobkova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт Петербург</p></bio><bio xml:lang="en"><p>St. Petersburg</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нгуен</surname><given-names>Туй Ван</given-names></name><name name-style="western" xml:lang="en"><surname>Nguyen</surname><given-names>Thuy Van</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ханой</p></bio><bio xml:lang="en"><p>Hanoi</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Могилевцев</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Mogilevtsev</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><email xlink:type="simple">d.mogilevtsev@ifanbel.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики НАН Беларуси</institution></aff><aff xml:lang="en"><institution>B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Университет ИТМО</institution></aff><aff xml:lang="en"><institution>ITMO University</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт материаловедения Вьетнамской академии наук и технологий</institution></aff><aff xml:lang="en"><institution>Institute of Material Sciences, Vietnam Academy of Science and Technology</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>24</day><month>11</month><year>2023</year></pub-date><volume>90</volume><issue>5</issue><fpage>689</fpage><lpage>695</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Корольков М.В., Ходасевич И.А., Пиотух А.С., Грабчиков А.С., Колобкова Е.В., Нгуен Т., Могилевцев Д.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Корольков М.В., Ходасевич И.А., Пиотух А.С., Грабчиков А.С., Колобкова Е.В., Нгуен Т., Могилевцев Д.С.</copyright-holder><copyright-holder xml:lang="en">Korolkov M.V., Khodasevich I.A., Piotukh A.S., Grabtchikov A.S., Kolobkova E.V., Nguyen T., Mogilevtsev D.S.</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/1401">https://zhps.ejournal.by/jour/article/view/1401</self-uri><abstract><p>Исследованы спектры ап-конверсионной люминесценции (АКЛ) фторфосфатных стекол, допированных редкоземельными ионами иттербия (Yb3+ с концентрацией 4—10 %) и тулия (Tm3+ с концентрацией 10–5—3 %) в режиме непрерывного возбуждения с длиной волны 975 нм. Показано, что каждая из наблюдаемых полос АКЛ — результат нескольких процессов, протекающих с различных возбужденных состояний ионов тулия и характеризующихся разной степенью нелинейности по числу поглощенных фотонов, необходимых для возбуждения этих состояний. Проанализировано влияние интенсивности накачки и концентраций допированных ионов на вклады АКЛ, обусловленных процессами возбуждения с разной нелинейностью. Показано, что одновременное формирование нескольких линий в каждой области спектра АКЛ типично для пары ионов иттербия и тулия при небольшой концентрации тулия (доли процента и меньше) и достаточно большой концентрации иттербия (4—10 %). Увеличение концентрации ионов тулия до 3 % при концентрации иттербия 5 % приводит к формированию АКЛ преимущественно в полосе 755—840 нм с максимумом вблизи 793 нм.</p></abstract><trans-abstract xml:lang="en"><p>We have investigated up-conversion luminescence spectra of fluorophosphate glasses doped with rareearth ions Yb3+ with concentrations from 4 to 10% and Tm3+ with concentrations from 10–5 to 3% CW excited at 975 nm. Observed features of the spectra are the result of several up-conversion processes. Each process corresponds to a different Tm3+ excited level and possible nonlinearity (i.e., with a different number of absorbed photons per the emitted one). We used our obtained experimental data to analyze an influence of the pumping power and the doping ions concentration on respective contributions of different processes in the luminescence spectra. We showed that simultaneous appearance of several lines in each observed spectral region is typical for smaller concentrations of Tm3+ (much less than a percent) and larger concentrations of Yb3+ (4–10 %). Increasing Tm3+ concentration up to 3% while having 5% Yb3+ concentration leads to localization of the up-conversion spectrum in 755—840 nm band with a maximum near 793 nm.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ап-конверсионные процессы</kwd><kwd>кросс-релаксационный перенос энергии</kwd><kwd>ап-конверсионная люминесценция</kwd><kwd>редкоземельный ион</kwd><kwd>допированный ион</kwd><kwd>фторфосфатные стекла</kwd></kwd-group><kwd-group xml:lang="en"><kwd>up-conversion process</kwd><kwd>cross-relaxation energy transfer</kwd><kwd>up-conversion luminescence</kwd><kwd>rareearth ion</kwd><kwd>doping ion</kwd><kwd>fluorophosphate glasses</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Белорусского республиканского фонда фундаментальных исследований (договор № Ф22В-008)</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">F. 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