Development and characterization of Yb-Er laser glass for high average power laser diode pumping
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- Karlsson, G., Laurell, F., Tellefsen, J. et al. Appl Phys B (2002) 75: 41. doi:10.1007/s00340-002-0950-4
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A new strong erbium laser glass (SELG) based on a boro-alumo-phosphate composition is reported. We discuss the synthesis and chemical properties together with spectroscopic and thermo-mechanical data. The new glass composition shows excellent laser performance and withstands high-average power pump radiation. We present laser results at 1.54 μm from flashlamp and laser pumping. In tests with laser-diode pumped Q-switched Er-Yb microchip lasers, we have achieved up to 150 mW of average output power and generated 1.2 kW in peak power. Co2+:MgAl2O4 was here used as the saturable absorber.