Abstract
Transparent Er:Lu2O3 ceramics were fabricated by the solid-state reaction method and vacuum sintering followed by hot isostatic pressing. The micrograph of the Er:Lu2O3 transparent ceramics exhibited a pore-free structure with the average grain size of ∼2μm. The in-line transmittance at 600nm and 1300nm were about 80% and 83%, respectively. The absorption, emission spectra and the decay lifetimes of Er:Lu2O3 ceramics were investigated. The 3at.% Er:Lu2O3 ceramics were pumped by 967nm InGaAs laser diodes. A maximum output power of 189mW at 2.7μm was obtained with a corresponding slope efficiency of 2.16%.
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