Abstract
Erbium doped glass-ceramics modified by different content of Zn2+ were prepared. The mid-infrared fluorescence intensity (2.7 μm) has been enhanced by Zn2+ introduction. The x-ray diffraction (XRD), FTIR and mid-infrared spectra were investigated. As the introduction of Zn2+, the crystals (ZrF4) begin to participate in glass. In addition, the size of the crystals changes with the content of Zn2+ ions. The mid-infrared emission intensity enhanced with the growth of crystals. Ω2 improved with the introduction of Zn2+, which showed higher asymmetry and covalency. Emission cross-section (1.42 × 10−20 cm2) and absorption cross-section (1.04 × 10−20 cm2) at 2.7 μm were measured. By the Judd-Ofelt theory and absorption curves, it shows that parameter.
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