Abstract
Neodymium-doped strontium lanthanum aluminate crystals Sr1−xLax−yNdyMgxAl12-xO19 contain two structural Nd centers with slightly different spectroscopic properties, whose proportion is determined by the composition parameter x. By choosing a composition with x=0.4, which grants the dominance of one of these centers (the center C1), whose properties are suitable for quasi-three-level Nd laser scheme, efficient 901nm continuous-wave laser emission (slope efficiency ∼0.74) was obtained under 792nm Ti:sapphire laser pumping. Preliminary experiments evidence the possibility of obtaining 450.5nm radiation by frequency doubling. Owing to the large absorption linewidth (∼4nm) this crystal shows good prospect for diode laser pumping.
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