Abstract
Lead fluorosilicate (SKNPfLfDy) glasses doped with various Dy3+ ion concentrations employed via melt-quenching method have been prepared and studied their thermal, optical and spectral properties for the spreading out of yellow laser applications. The emission spectra have prominent emission at 575 nm (4F9/2 → 6H13/2) transition. The stimulated emission cross-section (5.14 × 10-21 cm2) and branching ratio (62%) for the 4F9/2 → 6H13/2 transition were found to be relatively high. Lifetime is decreased from 1192 μs to 34 μs with increase in concentration due to concentration quenching as well cross-relaxation among the Dy3+ ions. The quantum efficiency found to be 69%. The optical gain, figure of merit, yellow/blue (Y/B) intensity ratio and gain bandwidth for 1.0 mol% Dy3+:SKNPfLf glass is found to be 27.55 × 10-25 cm2 s, 19.01 × 10-25 cm2 s, 3.96 and 63.32 × 10-28 cm3, respectively. The obtained results revealed that the SKNPfLfDy glasses possibly useful for yellow laser applications.
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