Abstract
Er 3+:Li 3Ba 2Gd 3(MoO 4) 8 crystal has been grown from a melt of Li 2MoO 4 by the top seeded solution growth method (TSSG). The polarized spectral properties of Er 3+:Li 3Ba 2Gd 3(MoO 4) 8 crystal were investigated and the spectroscopic parameters were calculated and analyzed based on the Judd–Ofelt (J–O) theory. The emission cross-sections were calculated by the Fuchtbauer–Ladenburg (F–L) equation and the peak values of the emission band at 1535 nm were 9.7×10 −21, 7.9×10 −21 and 8.4×10 −21 cm 2 for E∥ b, E∥D1 and E∥ D2, respectively. Under 977 nm excitation five up-conversion fluorescence bands around 490, 530, 550, 660 and 800 nm were observed, and the possible up-conversion mechanisms were proposed.
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