Er3+–Yb3+ codoped oxyfluoride germanate glass ceramics containing SrF2 nanocrystals for 1.5 µm optical amplification.
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| Title: | Er3+–Yb3+ codoped oxyfluoride germanate glass ceramics containing SrF |
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| Authors: | Li, Siqiang1 (AUTHOR), Zhang, Xizhen1 (AUTHOR) zhangxz01@sina.com, Song, Linke1 (AUTHOR), Zhang, Yanqiu1 (AUTHOR), Gao, Duan1 (AUTHOR), Zhang, Sujuan2 (AUTHOR), Pan, Xiuyu2 (AUTHOR), Zhang, Yuhang3 (AUTHOR), Chen, Baojiu1 (AUTHOR) chenmbj@sohu.com |
| Source: | Journal of the American Ceramic Society. Mar2025, Vol. 108 Issue 3, p1-12. 12p. |
| Subjects: | Germanate glasses, Absorption cross sections, Nanocrystals, Ceramics, Phonons |
| 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. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| 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. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00027820 |
| DOI: | 10.1111/jace.20259 |
