Abstract

Tm(1.5\%)-Gd(29.5\%)-Lu(29\%) co-doped KY(WO<sub>4</sub>)<sub>2</sub> layers were grown onto KY(WO<sub>4</sub>)<sub>2</sub> substrates by liquid-phase epitaxy. Channel waveguides were structured with Ar-beam milling and overgrown with pure KY(WO<sub>4</sub>)<sub>2</sub>. Lasers demonstrated 31.5\% slope efficiency and 149 mW of output power.

© 2011 IEEE

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