EMISSION PROPERTIES OF YB3+ IN FLUOROPHOSPHATE GLASS

In fluorophosphate glass samples containing Al, Mg, Ca, Sr, Y fluoride s and Ba(PO3)(2) and Al(PO3)(3) were prepared from reagent grade start ing materials, melted at 1000 degrees C in air and cooled at 4 degrees C/s. The stimulated emission cross-section of Yb3+ was observed to de pend on phosphate contents and modifier ions. OH- ions, which were inc orporated into glass with phosphate, affect the fluorescence lifetime of Yb3+. No concentration quenching can be observed for doping concent ration of Yb3+ less than or equal to 1.02 x 10(21) ions/cm(3). The inf luence of pumping wavelengths on the lifetime of Yb3+ was also investi gated.