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Optimizing energy transfer in Er3+/Yb3+Co-doped heavy metal oxide bismuth borate glasses for C-band optical amplifiers
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DOI：10.1016/j.optmat.2025.116939.png)
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Abstract
En 中文
This study investigates the photoluminescence properties of heavy metal oxide glasses composed of B2O3, Bi2O3, Gd2O3, K2O, and Li2O, doped with Ytterbium (Yb3+) and Erbium (Er3+) ions, referred to as BBGKLEr3+/Yb3+. These glasses were made by melt-quenching procedure with varying concentrations of the Yb3+ dopant to assess their luminescence characteristics. Highpersensitive band in the visible spectrum was appeared at 521 nm for the transition (2H, 4G)11/2 for Er3+ ions in BBGKLEr3+/Yb3+ glasses. A 980 nm diode laser was employed to excite the Er3+/Yb3+ ions, facilitating the investigation of up-conversion (UC) and down-conversion processes. The BBGKLEr3+/Yb3+ glasses exhibited significant UC emission alongside a strong emission band at 1530 nm. Notably, the gain cross-section for BBGKLglasses doped with 0.5 mol% Er3+ and 5 mol% Yb3+ ions increased to 2.39 x 10-21 cm2, as determined by Mc Cumber theory. With an estimated lifetime of 0.885 +/- 0.05 ms, the 1530 nm near infra-red emission demonstrated remarkable efficiency in promoting rare earth ion emission, further enhanced by the extended lifetime of the BBGKLEr3+/Yb3+ glasses. Spectroscopic analyses, including emission spectra, emission decay profiles, and gain cross-sections, suggest that BBGKLEr3+/Yb3+ glasses hold promise for use in C-band amplifiers or as laser gain media.
Keywords:
Erbium
Ytterbium
Energy transfer
Pump power
Mc cumbers theory
Gain cross-sections
Journal
IF:
4.2
Papers:
1.7W
Citations:
3.4W
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