Formation of Tm-Y centers in CaF2-YF3:Tm3+ solid-solution crystals
| Autor: | Alexander G. Papashvili, A. N. Nakladov, O.K. Alimov, Maxim E. Doroshenko, Kseniia A. Pierpoint, V. A. Konyushkin |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Biophysics chemistry.chemical_element 02 engineering and technology General Chemistry Selective excitation 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Laser 01 natural sciences Biochemistry Fluorescence spectra Atomic and Molecular Physics and Optics 0104 chemical sciences law.invention Ion Crystal Crystallography Thulium chemistry law 0210 nano-technology Excitation Solid solution |
| Zdroj: | Journal of Luminescence. 208:475-478 |
| ISSN: | 0022-2313 |
| Popis: | The spectroscopic properties of Tm3+ optical centers at the 3F4-3H6 two-micron transition in CaF2-YF3:Tm3+ solid-solution crystals are studied by the selective laser excitation technique. The low-temperature (14 K, 77 K) time-resolved fluorescence spectra and lifetimes of several observed optical centers of thulium ions are measured under selective excitation at the 3H6-3H5 transition. Four optical centers in the CaF2-YF3:Tm3+ crystal are identified, namely, a new long-lifetime (3F4 level lifetime longer than 100 ms) optical center similar to a center observed in CaF2:Tm3+ crystals and three spectrally different clustered centers, one of which has an analogue in the CaF2:Tm3+ crystal and two others are new complex Tm-Y clusters. |
| Databáze: | OpenAIRE |
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