Abstract
Erbium (Er)- and Ytterbium (Yb)-codoped monoclinic single crystals were grown by top seeded solution growth-slow cooling method for several different doping concentrations. Growth parameters have been optimized to obtain macrodefect-free single crystals. Er energy levels involved in the were determined by polarized optical absorption. The maximum emission cross section for this electronic transition has been evaluated, being for at . Laser oscillation in the range was obtained by pumping the Yb ion at and sensitizing Er. The maximum output power achieved was , with 1.2% slope efficiency.
© 2008 Optical Society of America
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