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Title: | Growth and spectroscopy of Er3+-doped Na5Y9F32 (5NaF∙9YF3) crystal |
Authors: | Basyrovaa, L. Loikoa, P. Doualana, Jean-Louis Benayada, A. Ghassen Zin Elabedineb Rosa Maria Soléb Aguilób, M. Díazb, F. Mateosb, X. Duninac, E. Kornienko, A. Brauda, A. Labbéa, C. Camya, P. |
Keywords: | fluoride crystals sodium-yttrium fluoride Czochralski method erbium ions optical spectroscopy |
Issue Date: | 2022 |
Publisher: | SPIE Photonics Europe |
Citation: | Growth and spectroscopy of Er3+-doped Na5Y9F32 (5NaF∙9YF3) crystal / Basyrova L. [et al.] // Fiber Lasers and Glass Photonics: Materials through Applications III. – SPIE, 2022. – Т. 12142. – С. 132–137. |
Abstract: | We report on the growth, structure and spectroscopy of an Er3+-doped Na5Y9F32 (5NaF∙9YF3) crystal featuring significant inhomogeneous spectral broadening. Single-crystals of Na5Y9F32 doped with 0.22 – 9.63 at.% Er3+ were grown by the Czochralski method. Er:Na5Y9F32 exhibits a cubic fluorite-type structure (a = 5.4881(2) Å for 5.59 at.% Er3+ doping). The most intense Raman band of this material is found at ~404 cm-1. Er3+ ions in Na5Y9F32 exhibit a broad and smooth emission band owing to the 4I11/2 → 4I13/2 transition with a maximum stimulated-emission cross-section of 0.42×10-20 cm2 at 2708 nm. According to the Judd-Ofelt analysis, the radiative lifetime of the 4I11/2 multiplet is 10.0 ms and the luminescence branching ratio β(4I11/2 → 4I13/2) is 17.6%. The luminescence lifetimes of the 4I11/2 and 4I13/2 Er3+ states were studied as a function of the doping concentration. For 5.59 at.% Er doping, they are 7.72 ms and 6.69 ms, respectively, representing a favorable ratio for mid-infrared laser operation. |
URI: | https://rep.vsu.by/handle/123456789/36608 |
Appears in Collections: | Научные публикации (2022) |
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