کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5398462 | 1505891 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of upconversion luminescence in antimony-germanate double-clad two cores optical fiber co-doped with Yb3+/Tm3+ and Yb3+/Ho3+ ions
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the paper double-clad optical fiber with two off-set cores co-doped with 1Yb2O3-0.1Tm2O3 and 1Yb2O3-0.5Ho2O3 has been investigated. Antimony-germanate glass was melted as a matrix for active cores. The concentration of lanthanides and their ratio have been optimized to achieve maximum upconversion emission intensity at 478 nm (1G4â3H6) and 650 nm (1G4â3F4) in glasses doped with Tm3+ ions and 545 nm and 655 nm, corresponding to the 5F5â5I8 and 5F4â5I8 transitions in holmium ions. The energy transfer efficiency in glasses used as optical fiber cores was ηTm=56% (0.1 mol% Tm2O3) and ηHo=85% (0.5 mol% Ho2O3), respectively. As a result of excitation of the fabricated optical fiber (λexc=976 nm), a UC luminescence spectra was obtained. Superposition of three emission bands at the wavelengths of 481 nm (Tm3+: blue), 545 nm (Ho3+:green) and 665 nm (Tm3+, Ho3+: red) from two separated cores was measured. Influence of fiber length and excitation power on the color coordinates (CIE-1931) have been also investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 170, Part 3, February 2016, Pages 795-800
Journal: Journal of Luminescence - Volume 170, Part 3, February 2016, Pages 795-800
نویسندگان
J. Zmojda, M. Kochanowicz, P. Miluski, J. Dorosz, J. Pisarska, W.A. Pisarski, D. Dorosz,