{"title":"Er3+–Yb3+ codoped oxyfluoride germanate glass ceramics containing SrF2 nanocrystals for 1.5 µm optical amplification","authors":"Siqiang Li, Xizhen Zhang, Linke Song, Yanqiu Zhang, Duan Gao, Sujuan Zhang, Xiuyu Pan, Yuhang Zhang, Baojiu Chen","doi":"10.1111/jace.20259","DOIUrl":null,"url":null,"abstract":"<p>Er<sup>3+</sup>–Yb<sup>3+</sup> codoped transparent oxyfluoride germanate glass ceramics (GCs) containing SrF<sub>2</sub> nanocrystals (NCs) have been prepared by melt quenching method. We have measured absorption, photoluminescence (PL), and PL decay. The PL spectra excited at 378 nm and 980 nm for 1.53 µm near-infrared (NIR) and visible emission have been investigated. By using Judd–Ofelt (JO) theory, optical transition parameters have been calculated. Thanks to low phonon energy SrF<sub>2</sub> NCs and high fluorine oxyfluoride glass matrix, strong 1.53 µm emission with large measured lifetime (<i>τ</i><sub>meas</sub>) are observed. After SrF<sub>2</sub> NCs formed, the intensity parameter Ω<sub>2</sub> becomes smaller for GC samples, the PL intensity and full width at half maximum increase. Absorption cross section (<i>σ</i><sub>a</sub>) and emission cross section (<i>σ</i><sub>e</sub>) at 1.5 µm have been calculated by McCumber theory. The luminescence efficiency (<i>η</i>), effective linewidth (Δ<i>λ</i><sub>eff</sub>), gain bandwidth (<i>σ</i><sub>e</sub>Δ<i>λ</i><sub>eff</sub>), and figure of merit (<i>σ</i><sub>e</sub>τ<sub>m</sub>) have been evaluated. The results show excellent optical amplification performance.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 3","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jace.20259","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
Er3+–Yb3+ codoped transparent oxyfluoride germanate glass ceramics (GCs) containing SrF2 nanocrystals (NCs) have been prepared by melt quenching method. We have measured absorption, photoluminescence (PL), and PL decay. The PL spectra excited at 378 nm and 980 nm for 1.53 µm near-infrared (NIR) and visible emission have been investigated. By using Judd–Ofelt (JO) theory, optical transition parameters have been calculated. Thanks to low phonon energy SrF2 NCs and high fluorine oxyfluoride glass matrix, strong 1.53 µm emission with large measured lifetime (τmeas) are observed. After SrF2 NCs formed, the intensity parameter Ω2 becomes smaller for GC samples, the PL intensity and full width at half maximum increase. Absorption cross section (σa) and emission cross section (σe) at 1.5 µm have been calculated by McCumber theory. The luminescence efficiency (η), effective linewidth (Δλeff), gain bandwidth (σeΔλeff), and figure of merit (σeτm) have been evaluated. The results show excellent optical amplification performance.
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The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
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