کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7906576 | 1510754 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Luminescent properties of Tb3+- doped TeO2-WO3-GeO2 glasses for green laser applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Luminescent properties of Tb3+- doped TeO2-WO3-GeO2 glasses for green laser applications Luminescent properties of Tb3+- doped TeO2-WO3-GeO2 glasses for green laser applications](/preview/png/7906576.png)
چکیده انگلیسی
Different concentrations of Tb3+ -doped oxyfluoro tellurite (TWGTb) glasses were prepared by conventional melt quenching technique and characterized for green laser applications. The Judd-Ofelt theory was applied to evaluate various spectroscopic and radiative parameters. The TWGTb glasses exhibit 5D3 â 7F5-3 and 5D4 â 7F6-0 transitions when excited at 316â¯nm radiation. The variation of intensity of 5D4 â 7F5 (Green) and 5D3 â 7F4 (Blue) transitions and the green to blue (IG/IB) intensity ratios were studied as a function of Tb3+ ions concentration. The laser characteristic parameters such as effective bandwidth (Îλeff), stimulated emission cross-section (Ïe), gain bandwidth (Ïeâ¯Ãâ¯Îλeff) and optical gain (Ïeâ¯Ãâ¯ÏR) were determined using the three phenomenological Judd-Ofelt intensity parameters. The fluorescence decay profiles of 5D4 metastable level exhibit single-exponential nature for all the samples. Based on the experimental results we suggest that the 1.0â¯mol% of Tb3+ -doped TWGTb glass could be a suitable laser host material to emit intense green luminescence at 545â¯nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 80, June 2018, Pages 154-159
Journal: Optical Materials - Volume 80, June 2018, Pages 154-159
نویسندگان
T. Subrahmanyam, K. Rama Gopal, R. Padma Suvarna, B.C. Jamalaiah, M.V. Vijaya Kumar,