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Conferences > ASSL > 1997 > SC > SC6

(CrO4)4-:Li2MgSiO4, a near IR broad-band emitting material with very long fluorescence lifetime

Corinne Anino, Jeanine Théry, and Daniel Vivien

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Abstract

Orthorhombic Li2MgSiO4 in which all the cations lie in tetrahedral sites can incorporate large amount of Cr4+ ions.

Cr4+:Li2MgSiO4 exhibits broad-band fluorescence around 1.2 μm, with fluorescence lifetime exceeding 100 μs at room temperature. This is the longest lifetime reported so far for a tetrahedral Cr4+ doped compound. Such a value is explained by assuming thermalization between the 1E and 3T2 Cr4+ energy levels, 1E king the lowest one.

© 1997 Optical Society of America

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