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This paper reported the thermal stability and spectroscopic properties of Ga2 O3-GeO2-Na2 O-K2 O(GGNK) glasses doped with Er3+.The GGNK glasses were characterized by differential scanning calorimetry(DSC),Raman spectra,absorption and infrared-visible fluorescence spectra.Measured DSC result showed that these glasses possessed an excellent stability(ΔT=188.6 oC).The relationship between glass composition and Judd-Ofelt intensity parameters and other optical properties of Er3+,such as the absorption and stimulated emission cross-sections,were clarified.Meanwhile an intense broadband 1.53-μm emission with a full width at halfmaximum of 51 nm and peak emission cross-section of 9.32×10-21cm2of Er3+-doped GGNK glass was obtained upon 980 nm diode-laser excitation.Effects of K2 O replacing Na2 O on the thermal stability and spectroscopic properties were investigated.It was found that the incorporation of K2 O into Er3+-doped Ga2 O3-GeO2-Na2 O glass could effectively improve the 1.53 μm emission luminescence.The results showed that GGNK glass might be more attractive host material for their application in C-band optical fiber amplifiers.
This paper reported the thermal stability and spectroscopic properties of Ga2 O3-GeO2-Na2 O-K2 O (GGNK) glasses doped with Er3 +. The GGNK glasses were characterized by differential scanning calorimetry (DSC), Raman spectra, absorption and infrared- The relationship between glass composition and Judd-Ofelt intensity parameters and other optical properties of Er3 +, such as the absorption and stimulated emission cross-sections, were clarified.Meanwhile an intense broadband 1.53-μm emission with a full width at half maximum of 51 nm and peak emission cross-section of 9.32 × 10-21 cm 2 Er3 + -doped GGNK glass was obtained upon 980 nm diode-laser excitation. Effects of K2 O replacing Na2 O on the thermal stability and spectroscopic properties were investigated. It was found that the incorporation of K2 O into Er3 + -doped Ga2 O3-GeO2-Na2 O glass could effectively improve the 1.53 μm em ission luminescence. The results showed that GGNK glass might be more attractive host material for their application in C-band optical fiber amplifiers.