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- W2358682011 abstract "In recent years, Er~(3+)-doped glasses with a broad 1.5 μm emission band have been extensively investigated for obtaining erbium-doped fiber amplifiers (EDFA) with a wide and flat gain spectrum in the telecommunication window, to be used in dense wavelength division multiplexing (DWDM) optical network systems. In this paper, Er~(3+)-doped B_2O_3-SiO_2-GD_2O_3-Na_2O (BSGN) glasses were prepared by the technique of high-temperature melting at different temperature. The 1.5 μm emission spectra responsible to ()~4I_(13/2)→()~4I_(15/2) transition of Er~(3+) at 17 K and room temperature, absorption spectra, time resolved spectra and lifetime of the ()~4I_(13/2) state are measured and investigated, respectively. Both the bandwidth of the 1.5 μm emission and the J-O parameter Ω_6 of Er~(3+) in the BSGN glasses increase with the increasing of B_2O_3 content, and their lifetime decreased. A broad 1.5 μm emission band with bandwidth of more than 80 nm is obtained. The glass ceramics were obtained by the heat treatment for the previous glasses at different temperature above its glass transition temperature (T_g), they show different emission spectral shapes from the corresponding glasses. The measured time decay pattern of the 1.5 μm emission in the glass ceramic consists of a fast and a slow component, which are attributed to the glass phase and the crystalline phase, respectively, indicating higher 1.5 μm emission efficiency in crystalline phase than that in glass phase. Differential thermal analysis result (DTA) also demonstrates high thermal stability of the BSGN glasses. Crystallization by heat treatment is helpful to increasing emission efficiency of the 1.5 μm emission band. The Er~(3+)-doped BSGN glasses are the promising materials for the EDFA in the 1.5 μm window of optical telecommunication system." @default.
- W2358682011 created "2016-06-24" @default.
- W2358682011 creator A5053003028 @default.
- W2358682011 date "2004-01-01" @default.
- W2358682011 modified "2023-09-25" @default.
- W2358682011 title "Infrared Spectra and Thermal Stability of Er~(3+)-doped Gadolinium Borosilicate Glasses and Glass Ceramics" @default.
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