【机 构】
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KeyLaboratoryofPhotoelectronicMaterials,NingboUniversity,Ningbo315211,China
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Pr3 and Yb3 co-doped phosphate glasses are prepared to study their optical properties. Excitation and emission spectra and decay curves are used to characterize their luminescence. We demonstrate that upon excitation of Pr3 ion with one high energy photon at 470 nm, two near-infrared (NIR) photons are emitted at 950-1100 nm (Yb3 :2F5/2 -
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