|
Título:
|
Phonon coupling of Cr^3^+ ions in Cs_2NaAlF_6 crystals.
|
|
Autores:
|
Martínez Matos, Óscar ;
Torchia, Gustavo Adrián ;
Tocho, Jorge Omar ;
Khaidukov, Nikolai Mikhailivich
|
|
Tipo de documento:
|
texto impreso
|
|
Editorial:
|
Pergamon-Elsevier Science Ltd, 2004
|
|
Dimensiones:
|
application/pdf
|
|
Nota general:
|
info:eu-repo/semantics/openAccess
|
|
Idiomas:
|
|
|
Palabras clave:
|
Estado = Publicado
,
Materia = Ciencias: Física: Optica
,
Tipo = Artículo
|
|
Resumen:
|
We have studied the influence of the electron-lattice coupling on the luminescence quantum yield for Cr^3^+ ions in a Cs_2NaAlF_6 crystal. For this purpose, we analyze the absorption and emission spectra of Cr^3^+ ions by means of the configurational coordinate model in the harmonic approximation. We have found the energy of the breathing phonon associated to Cr^3^+ ions in this host. In our findings we explain the high value of luminescence quantum yield reported previously (near to 70%), if we take into account the uncoupling between the breathing phonon and the normal modes associated to the bulk vibration. The Cr^3^+:Cs_2NaAlF_6 crystals promise to be a potential efficiency tunable laser device in the near infrared (700–900 nm) spectral range.
|
|
En línea:
|
https://eprints.ucm.es/id/eprint/25259/1/Martinez-Matos25.pdf
|
