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Título:
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Influence of the electron-lattice coupling for Cr^3^+ ions in Nb^5^+ site into congruent co-doped LiNbO_3: Cr^3^+: ZnO crystal
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Autores:
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Martínez Matos, Óscar ;
Torchia, Gustavo Adrián ;
Vaveliuk, Pablo ;
Tocho, Jorge Omar
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Tipo de documento:
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texto impreso
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Editorial:
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Pergamon-Elsevier Science Ltd, 2003-08
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Tipo = Artículo
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Resumen:
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This paper shows the important role that plays the electron-lattice coupling to represent correctly the energy levels of Cr^3^+ ions in Nb^5^+ site into congruent LiN_bO_3 crystals doped with 5.3% of ZnO. Racah's parameters: and crystal field intensity were determined and the Tanabe–Sugano's diagram was constructed. The characteristics of the absorption and emission spectra of Cr^3^+ ions in Nb^5^+ site have been explained in terms of the Configurational Co-ordinate model in the harmonic approximation. Huang–Rhys parameter, S=3.5 and the breathing phonon energy, are also reported in this work. Different values of breathing phonon for Cr^3^+ in Nb^5^+ site than in Li+ site could explain the higher luminescent quantum efficiency of Cr^3^+ ions located in Nb^5^+ site in LiN_bO_3 crystals.
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En línea:
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https://eprints.ucm.es/id/eprint/25261/1/Martinez-Matos26.pdf
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