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Optical spectroscopy of erbium-doped lutetium orthophosphate

1999; Elsevier BV; Volume: 85; Issue: 1-3 Linguagem: Inglês

10.1016/s0022-2313(99)00060-5

1872-7883

Alexandra Rapaport, Vanessa David, Michael Bass, Chiranjit Deka, L. A. Boatner,

Photorefractive and Nonlinear Optics

Experimental spectroscopic investigations of the absorption and luminescence properties of Er3+ ions doped into single crystals of the tetragonal-symmetry host LuPO4 are reported. The LuPO4 host permits the incorporation of relatively high concentrations of lanthanide dopants such as Er3+. The fluorescence decay of the 4I13/2–4I15/2 emission was found to be governed by a single exponential decay process when excited with a low-intensity pump source. However, experiments performed on samples of different concentrations show that Er3+ ions in LuPO4 experience concentration quenching as well as self-trapping. Using high-Er-concentration samples, emissions were also observed at visible wavelengths due to up-conversion processes.