High pressure effect in the near-infrared emission of Nd3+-doped alkali silicate glasses
Abstract
The effect of high pressure (7.7 GPa) densification on the absorption and near-infrared emission of Nd-doped lithium, sodium and potassium disilicate glasses was investigated. Judd-Ofelt parameters O¿ (¿ = 2, 4 and 6) were calculated from the absorption spectra, before and after densification of glasses, indicating that the irreversible structural changes induced by pressure increased the symmetry of the Nd-O bonding. Density and refractive index of the glasses also increased, probably related to the close packing of SiO4 tetrahedra during densification. The magnitude of the splitting due to the Stark effect was larger for potassium silicate, before and after densification. The radiative transition probabilities of the hypersensitive transition for sodium and potassium silicate increased after densification while the radiative lifetime decreased. For lithium silicate, the opposite behavior was observed. The experimental results corroborate the influence of alkali ion and densification on the luminescence properties of Nd-doped alkali silicate glasses
How to cite
Montoya Matos I. & Balzaretti N.M. (2022). High pressure effect in the near-infrared emission of Nd3+-doped alkali silicate glasses (2022) High Pressure Research, 42 (1), 1-13. http://doi.org/10.1080/08957959.2021.2012570Publisher
Taylor & FrancisCategory / Subcategory
Pendiente / PendienteSubject
Journal
High Pressure ResearchNote
Indexado en Scopus
Collections
- Ingeniería Civil [23]