Relaxation properties of rare-earth ions in sulfide glasses: Experiment and theory - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2006

Relaxation properties of rare-earth ions in sulfide glasses: Experiment and theory

Résumé

Both radiative and nonradiative relaxation rates for a series of rare-earth ions doped 20Ge-5Ga-10Sb-65S (GeGaSbS) sulfide (chalcogenide) glasses have been determined. Temperature-dependent lifetimes were carried out for various excited levels of the sample. Radiative decay rates were derived by using the Judd-Ofelt approach. Nonradiative decay rates are evaluated by comparing the inversion of measured lifetimes with the calculated radiative decay rates. We have found that the multiphonon relaxation rates should be a predominant decay mechanism among the excited states if the energy gap to the next lower level is smaller than 2500 cm−1, and the decay mechanism can be determined using the semiempirical "energy-gap law." For an energy gap larger than 2500 cm−1, additional nonradiative decay processes become dominant over the multiphonon decay. Additional nonradiative decay processes have been quantitatively identified with the diffusion-limited relaxation calculations.

Domaines

Matériaux
Fichier non déposé

Dates et versions

hal-00867689 , version 1 (30-09-2013)

Identifiants

Citer

Viet Giang Truong, B. S. Ham, Anne-Marie Jurdyc, Bernard Jacquier, J. Leperson, et al.. Relaxation properties of rare-earth ions in sulfide glasses: Experiment and theory. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2006, 74, pp.184103. ⟨10.1103/PhysRevB.74.184103⟩. ⟨hal-00867689⟩
73 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More