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We report the demonstration of dual-wavelength laser output originating from excited Nd3+ ions and Yb3+ ions in Nd3+/Yb3+ co-doped phosphate glass fiber under 970-nm laser diode pumping. Using a free-space coupling method, laser bands at 1028 and 1053 nm were observed in a 35-cm-long fiber with the corresponding lasing thresholds of 4.3 and 31.5 W at room temperature. Emission and lasing spectra under...
2 mum emission spectra of Tm-Ho co-doped fluorophosphate glasses are measured and investigated. When doping 4 mol% TmF3 and 1 mol%HoF3, the most intense 2.0 mum emssion is achieved. Combining the energy transfer processes, the reason is discussed.
Under 980 nm LD pumping, the up-conversion intensity of rare earth doped glass-ceramic can be observed much stronger than that in the base glass. In addition, the luminescence branching ratio changed obviously by ceramic process.
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