The Nd3+→Yb3+ energy-transfer efficiency in the YAl3(BO3)4 nonlinear laser crystal has been investigated as a function of both donor (Nd3+) and acceptor (Yb3+) concentrations. An analytical expression giving the value of the energy-transfer rate for any Nd3+ and Yb3+ concentrations has been obtained on the basis of the analysis of experimental data. From this expression, a basic model is proposed to determine the Nd3+ and Yb3+ concentrations that optimize the Yb3+ output laser power obtained from a 808-nm diode-pumped Nd3+; Yb3+:YAl3(BO3)4 crystal.
© 2004 Optical Society of America
Daniel Jaque, Maria de la O Ramirez, Luisa Bausá, Adolfo Speghini, Marco Bettinelli, and Enrico Cavalli, "Influence of Nd3+ and Yb3+ concentration on the Nd3+→Yb3+ energy-transfer efficiency in the YAl3(BO3)4 nonlinear crystal: determination of optimum concentrations for laser applications," J. Opt. Soc. Am. B 21, 1203-1209 (2004)