Electron-lattice coupling in congruent co-doped LiNbO<sub>3</sub>:Cr<sup>3+</sup>:ZnO crystal
The importance of the role of the ion lattice coupling in determining the energy levels of Cr³⁺ ions in congruent LiNbO<sub>3</sub> crystals doped with 2.9% of ZnO is demonstrated in this paper. The Racah parameters: <i>B</i> 533 cm 1, <i>C</i> 3244 cm⁻¹ and the c...
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| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2001
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/58633 |
| Aporte de: |
| Sumario: | The importance of the role of the ion lattice coupling in determining the energy levels of Cr³⁺ ions in congruent LiNbO<sub>3</sub> crystals doped with 2.9% of ZnO is demonstrated in this paper. The Racah parameters: <i>B</i> 533 cm 1, <i>C</i> 3244 cm⁻¹ and the crystal-field intensity <i>Dq</i> = 1527 cm⁻¹ were determined and the Tanabe-Sugano diagram was constructed. The characteristics of the absorption and the emission spectra of Cr³⁺ ions in these crystals can be explained in terms of the configurational-coordinate diagram in the harmonic approximation, with good agreement obtained. The Huang Rhys parameter S 6.86 and the lattice phonon energy <i>hw</i>= 343 cm⁻¹ are also reported in this work |
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