Lead zinc gallium fluoride glass containing 2 mole% TmFS is shown to luminesce from 'Is (35200 cm-'), 'D, (28000), 'G, (2 1500) and 'Hq ( 12800) to several lower J levels. When the 24 mole% ZnF, is replaced by MnF, in the absence of thulium, the (broad band) quartet-to-sextet (ground state) emission
Anomalously fast energy transfer between manganese and thulium in fluoride glasses
β Scribed by O. Maoz; S.R. Rotman; A.M. Weiss; R. Reisfeld; M. Eyal
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 266 KB
- Volume
- 48-49
- Category
- Article
- ISSN
- 0022-2313
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Measurement of the time-response of the excited-state concentration of manganese has confirmed our previous hypothesis of fast energy transfer between manganese and thulium in fluoride glasses.
LaF3 In which manganese may replace all the zinc, and neodymium some lanthanum, Is studkd by dynamic and static methods. Both methods arrive at the same results Indicating Iinear dependence of transfer probability on &nor concentration. These results also demonstrate energy storage in the manganese-
Energy transfer rates between Nd(II1) and Yb(II1) in glasses of the basic composition 36 PbFz:24 ZnFz:35 CaFs:2 AlF3:3 YF3:4 LaFs were calculated from donor decay curves, and applied for construction of acceptor luminescence curves. The transfer rates are time dependent and the energy loss by Nd(II1