Abstract
The fluorescence dynamics in doped KGd(WO4)2 and KY(WO4)2 has been investigated. Lifetimes have been measured for the , , and levels around 1, 1.5, and , respectively. The lifetimes show a decreasing trend toward the limiting lifetime with increasing Er-to-Yb concentration ratio, whereas the lifetimes are mostly unaffected by the doping concentrations. A rate equation analysis has been performed to explain the observed behavior and gain is calculated for a continuous-wave laser at to find the optimum doping concentrations for high gain.
© 2006 Optical Society of America
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