Spectroscopic characterization of $$\hbox {Er}^{3+}$$ Er 3 + doped lead zinc phosphate glass via Judd–Ofelt analysis
| Autor: | Subhankar Ghosh, Pabitra Mandal, Swarup Chowdhury |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Absorption spectroscopy Elevated value Branching fraction Doping Analytical chemistry 02 engineering and technology Characterization (mathematics) 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Phosphate glass Melt quenching Mechanics of Materials Lead zinc General Materials Science 0210 nano-technology |
| Zdroj: | Bulletin of Materials Science. 42 |
| ISSN: | 0973-7669 0250-4707 |
| DOI: | 10.1007/s12034-019-1806-4 |
| Popis: | Lead zinc phosphate (LZP) glass doped with 0.6% $$\hbox {Er}^{3+}$$ is prepared by a conventional melt quenching technique. Judd–Ofelt (JO) analysis is carried out with an absorption spectrum of the as-prepared glass generating the set of JO parameters: $$\varOmega _2 =2.75\times 10^{-20}\, \hbox {cm}^{-2}$$ , $$\varOmega _4 =2.71\times 10^{-20}\, \hbox {cm}^{-2}$$ and $$\varOmega _6 =0.44\times 10^{-20}\, \hbox {cm}^{-2}$$ . The magnitude of the spectroscopic quality factor $$(\chi _{\mathrm{p}} )$$ defined by $$\varOmega _4 /\varOmega _6 $$ obtained in our sample turns out to be 6.16 which is 2–10 times larger than that of other $$\hbox {Er}^{3+}$$ doped glasses. The lifetime of $$^{4}\hbox {I}_{13/2}$$ and $$^{4}\hbox {I}_{11/2}$$ levels estimated via the JO parameters is found to provide superior values of 7.25 and 5.51 ms, respectively. The elevated value of $$\varOmega _4 /\varOmega _6 $$ along with the estimated 100% luminescence branching ratio of $$^{4}\hbox {I}_{13/2} \rightarrow ^{4}\hbox {I}_{15/2}$$ transition implies that $$\hbox {Er}^{3+}$$ doped LZP can be a promising material as a laser active medium. |
| Databáze: | OpenAIRE |
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