Spectral Properties and Parameters Calculation of Er:Ligdf₄ Crystal

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

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DOI: 10.4236/msa.2011.28156                

Abstract

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.

Keywords

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

Conflicts of Interest

The authors declare no conflicts of interest.

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