Abstract
A series of new glasses of 70TeO2-(20−x) ZnO–xGeO2–5La2O3–2.5K2O–2.5Na2O (mol%) doped with Yb3+ is presented. Thermal analysis, spectra and laser properties of Yb3+ ions have been measured. It is found that 70TeO2–20GeO2–5La2O3–2.5K2O–2.5Na2O composition glass had better thermal stability than 75TeO2–20ZnO–5Na2O glass, higher stimulated emission cross-section of 1.23pm2 for the 2F5/2→2F7/2 transition close to PN glass, lower minimum pump intensity of 0.98KW/cm2, long fluorescence lifetime of 0.92ms and the broad fluorescence effective line width of 77nm. Evaluated from the good potential laser parameters, this system glass is a promising host of miniature solid lasers such as short pulse generation in diode pumped lasers, short pulse generation tunable lasers, high-peak power and high-average power lasers, etc.
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