Quantum efficiencies and thermo-optical properties of Er3+-, Nd3+-, and Pr3+-single doped lead-indium-phosphate glasses

Authors：Santos E A F; Silva W F; De Araujo M T; Vermelho M V D; Guedes I; Loong C K; Boatner L A; Jacinto C^*

Source：Journal of Applied Physics, 2009, 106(11).

DOI：10.1063/1.3271345

The experimental determination of thermal and optical properties, such as the fluorescence quantum efficiency () and temperature coefficient of the optical path length change (ds/dT) have been a challenging task. In this work, mode-mismatched thermal lens and spectroscopic measurements were performed using Er3+ -, Nd3+ -, and Pr3+ -doped lead-indium-phosphate glasses to obtain the thermal diffusivity and conductivity, ds/dT, the thermal loading (nonradiative quantum efficiency), and . The experimental difficulties associated with obtaining for n systems with several emitting levels, such as Er3+ -doped materials were overcome. A discussion of the implications of the small values obtained for Er3+ - and Pr3+ -doped glass is presented.