Calculations of the transitions intensities in the optical spectra of Dy3+:LiYF4
| Autor: | Alexandra M. Tkachuk, Takugo Ishii, Mikhail G. Brik, Svetlana Ivanova, I.K. Razumova |
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| Rok vydání: | 2004 |
| Předmět: |
Absorption spectroscopy
Condensed matter physics Branching fraction Chemistry Mechanical Engineering Metals and Alloys General Medicine Branching (polymer chemistry) Optical spectra Mechanics of Materials Ab initio quantum chemistry methods Materials Chemistry Radiative transition Atomic physics Absorption (electromagnetic radiation) Spectroscopy Single crystal |
| Zdroj: | Journal of Alloys and Compounds. 374:63-68 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2003.11.142 |
| Popis: | Optical spectra of Dy3+:LiYF4 (Dy3+:YLF) single crystal were analyzed using Judd–Ofelt theory and discrete variational multielectron method (DVME). Oscillator strengths (OS) of transitions up to 39 000 cm−1 in the absorption spectrum, branching ratios and nonradiative transition rates were calculated; assignment of the absorption transitions was given. A good agreement between calculated and experimental values of branching ratios for transitions from quartet 4 F (3) 9/2 to the low-lying sextet levels is demonstrated. Ab initio calculations of OS were performed. |
| Databáze: | OpenAIRE |
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