کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5458055 | 1516163 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Long lifetime of Er3+: 4I11/2 in low phonon-energy fluoro-chloride glasses for mid-infrared optical applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A new kind of fluoro-chloride glass was successfully prepared based on fluoroaluminate glass modified by various Clâ. The reductions of phonon density and OHâ content revealed by the measured Raman and FTIR spectra show that structural changes caused by the Clâ ions have an effect on the optical properties. With increasing chloride content, the thermal stability factor ÎT showed an increase trend, indicating a better thermal stability of the host. Meanwhile, according to Judd-Ofelt calculation, the intensity parameter Ω2 increased, which indicates a stronger covalency and local asymmetry of the coordination bonds around the Er3+ ions after introduction of Clâ. Noticeably, the lifetime (3.48 ms) of Er3+: 2.7 μm obtained in the chloride-rich glass (AYF-8Cl) is the longest in reported glass systems, along with obvious enhanced fluorescence intensity. All the results suggested that the fluoro-chloride glasses hint its potential applications in laser materials, especially in 3 μm wavelength.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 731, 15 January 2018, Pages 418-422
Journal: Journal of Alloys and Compounds - Volume 731, 15 January 2018, Pages 418-422
نویسندگان
Fangwei Qi, Feifei Huang, LingFeng Zhou, Ying Tian, Ruoshan Lei, GuangYu Ren, Junjie Zhang, Long Zhang, Shiqing Xu,