Abstract

The spectroscopic characterization and fluorescence dynamics of Yb³⁺:LiLa(WO₄)₂ crystal are investigated. The Yb³⁺:LiLa(WO₄)₂ crystal exhibits a broad absorption and emission spectral bands, large absorption and emission cross sections, and moderate fluorescence lifetime. Blue light emission around 480 nm is observed at 10 K and is demonstrated through cooperative upconversion from the deexcitation of excited Yb³⁺-Yb³⁺ pairs.

© 2010 Chinese Optics Letters

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