Developments in Ceramic Materials Research

Optical Fluoride and Oxysulfide Ceramics: Preparation and Characterization 69
Fluorescence, a.u.
1.0
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λ, nm
CaF 2 :Er 3+ ceramics
1% 5% 5%
T=300 K
4 I11/2 --> 4 I 15/2
0.0
950 960 970 980 990 1000 1010 1020 1030 1040
Figure 14. Normalized fluorescence spectra of the CaF 2: Er 3+ ceramic samples measured at the 4 I 11/2 →
4 I15/2 transition with different concentration of the Er 3+ ion at room temperature: CaF 2: Er 3+ (1%) – grey
curve (В(2)2-06 sample) - 1, CaF2: Er 3+ (5%) – black curve (B(2)39-05 sample) - 2, CaF 2: Er 3+ (5%) –
dark grey curve (В(1)3-06 sample) - 3.
Fluorescence, a.u.
1.0
0.9
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950 960 970 980 990 1000 1010 1020 1030 1040
λ, nm
2
3
ErF 3 raw material
for samples with 06 index
T=300 K
4 I11/2 --> 4 I 15/2
Figure 15. Normalized fluorescence spectra of the ErF 3 precursor used for sample preparation with 06
index measured at room temperature.