Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5402470 | Journal of Luminescence | 2010 | 5 Pages |
Abstract
Er:YSGG single crystals with good optical quality were grown by Czochralski method. X-ray diffraction (XRD) measurements show that the crystal lattice parameters of the 30 at.% Er3+-doped YSGG crystal were a=b=c=12.4640±0.0065 Ã
, α=β=γ=90°. The doping concentration of Er3+ in YSGG was calculated. The absorption spectrum and photoluminescence spectra of Er:YSGG crystal were studied at room temperature. Based on Judd-Ofelt (J-O) theory, the J-O intensity parameters Ωt (t=2, 4, 6), the experimental and theoretical oscillator strengths were calculated using the absorption spectrum. The intensity parameters Ωt (t=2,4,6) obtained to be Ω2=0.23Ã10â20 cm2, Ω4=0.86Ã10â20 cm2, Ω6=0.37Ã10â20 cm2, respectively. With these intensity parameters, the line strengths, oscillator strengths, transition probabilities, fluorescence branching ratios and radiation lifetimes were calculated. The photoluminescence spectra and excitation spectrum of Er:YSGG were measured and studied.
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Authors
Jing Su, Cuihong Yang, Qingfang Li, Qingli Zhang, Jianqiao Luo,