کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5007244 | 1461605 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mid-infrared luminescence and energy transfer of Tm3+ in silicate glasses by codoping with Yb3+ ions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A kind of novel silicate glasses doped with Tm3+ sensitized by Yb3+ were prepared by conventional melt quenching method. The optical properties of the synthesized glasses were theoretically and experimentally investigated. Based on the absorption spectra and the Judd-Ofelt theory, the J-O intensity parameters (Ωt), radiative transition probability (400.4 sâ1), fluorescence lifetime (4.99 ms) and absorption and emission cross sections (Ïe = 2.51 Ã 10â20 cm2) were calculated. According to fluorescence spectra, the 1.8 μm emission of Tm3+ could be greatly enhanced by adding proper amount of Yb3+ under the excitation of 980 nm and the optimized concentration ratio of Tm3+ and Yb3+ was found to be 1:3 in the present silicate glass system. Besides, the energy transfer mechanism between Yb3+ and Tm3+ were thoroughly discussed. With the assistance of Yb3+, the lifetime of Tm3+ from 0.54 ms increased to 1.42 ms. The energy transfer efficiency from Yb3+ to Tm3+ could reach 90.94%, and the energy transfer coefficient was 5.43 Ã 10â41 cm6/s. The content of OHâ was measured. The above results showed that Tm3+/Yb3+ co-doping could be expected to a promising way to achieve high efficient 2 μm lasing pumped by a 980 nm LD.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 94, 1 September 2017, Pages 106-111
Journal: Optics & Laser Technology - Volume 94, 1 September 2017, Pages 106-111
نویسندگان
Ruijie Cao, Yu Lu, Ying Tian, Feifei Huang, Yanyan Guo, Shiqing Xu, Junjie Zhang,