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9 June 2006 Growth and spectroscopic investigations of new crystal Er3+,Ce3+:NaLa(MoO4)2 promising for 1.5 μm solid-state lasers
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Abstract
Scheelite-like disordered double sodium-lanthanum molybdate NaLa(MoO4)2 single crystals co-doped with Er3+ and different concentrations of Ce3+ have been grown by Czochralski technique. The 300K spectroscopic properties of the excited states 4S3/2, 4I11/2 and 4I13/2 of Er3+ ions in grown crystals as a function of Cerium concentration have been investigated. The lifetime of 4I11/2 have been found to reduce from 130 μs in the solely Er-doped sample to approximately 3.5 μs, when the concentration of Ce reaches 50 at. %. At the same time the lifetime of 4I13/2 level at 300 K remains unchanged (3.7 ms) up to the concentration of Ce in crystal equal to 10 at. %, and reduces by less than 30% (2.6 ms) in the 50 at. % Ce co-doped sample. This result looks very promising from point of view of obtaining low-threshold 1.5 μm laser oscillation.
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K. A. Subbotin, D. A. Lis, E. Sani, A. Toncelli, M. Tonelli, V. A. Smirnov, and E. V. Zharikov "Growth and spectroscopic investigations of new crystal Er3+,Ce3+:NaLa(MoO4)2 promising for 1.5 μm solid-state lasers", Proc. SPIE 6258, ICONO 2005: Novel Photonics Materials: Physics and Optical Diagnostics of Nanostructures, 625805 (9 June 2006); https://doi.org/10.1117/12.677044
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