Table 1.
Chemical composition in mol% of the studied glasses.
| Sample | Composition in mol% | Eopt (eV) | ||||
|---|---|---|---|---|---|---|
| P2O5 | CdO | ZnO | Er2O3 | Tb2O3 | ||
| 1 | 70 | 15 | 15 | – | – | 4.921 |
| 2 | 70 | 15 | 15 | 0.5 | – | 4.240 |
| 3 | 70 | 15 | 15 | 1 | – | 3.674 |
| 4 | 70 | 15 | 15 | – | 0.5 | 3.250 |
| 5 | 70 | 15 | 15 | – | 1 | 3.162 |
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