Author(s)

Chun Li, Ying Zhang, Xuejian Zhang, Dongwei Miao, Hai Lin, Mauro. Tonelli, Fanming Zeng, Jinghe Liu

.

The absorption and fluorescence spectra of Er³⁺:LiGdF₄ crystal was measured at room temperature. Base on the Judd-Ofelt theory, the intensity parameters of Er³⁺ in LiGdF₄ crystal were determined, Ω₂=0.905×10^-20cm², Ω₄=2.47×10^-20cm² and Ω₆=4.92×10^-20cm². The values of the radiative transition probabilities, branching ratios, integrated emission cross-section and radiative lifetimes of excited states of Er³⁺ in LiGdF₄ crystal were calculated. The stimulated emission cross-section was also evaluated for the ⁴I_13/2→⁴I1_5/2 transitions. In comparisons with other Er³⁺ doped laser crystals, Er³⁺:LiGdF₄ crystal has potential as a promising laser crystal.

Erbium-Doped Yttrium Lithium Gadolinium Fluoride Crystal, Absorption Spectrum, Judd-Ofelt Theory

C. Li, Y. Zhang, X. Zhang, D. Miao, H. Lin, M. Tonelli, F. Zeng and J. Liu, "Spectral Properties and Parameters Calculation of Er:Ligdf₄ Crystal," Materials Sciences and Applications, Vol. 2 No. 8, 2011, pp. 1161-1165. doi: 10.4236/msa.2011.28156.