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. 2014 Jan 9;4:3607. doi: 10.1038/srep03607

Table 3. J-O parameters Ωt of Er3+ in various glasses.

  AYF1 AYF2 AYF3 ZBLAN ZBLAY ZBLN phosphate
Ω2(×10−20 cm−2) 1.59 1.36 1.56 2.70 3.08 2.60 6.65
Ω4(×10−20 cm−2) 1.13 1.03 1.10 1.68 1.46 1.31 1.52
Ω6(×10−20 cm−2) 1.01 0.95 1.05 1.18 1.69 1.12 1.11
δ(×10−6) 0.12 0.03 0.10 0.11 --- --- ---
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