Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Standard and modified Judd-Ofelt theories in Pr3+-doped calcium aluminosilicate glasses: A comparative analysis

Full text
Author(s):
Flizikowski, G. A. S. [1] ; Zanuto, V. S. [1, 2] ; Nunes, L. A. O. [2] ; Baesso, M. L. [1] ; Malacarne, L. C. [1] ; Astrath, N. G. C. [1]
Total Authors: 6
Affiliation:
[1] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, Parana - Brazil
[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560590 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Alloys and Compounds; v. 780, p. 705-710, APR 5 2019.
Web of Science Citations: 1
Abstract

The small energy difference between the fundamental level and the first opposite parity configuration of Pr3+-doped hosts is particularly challenging for the characterization of radiative transitions using the Judd-Ofelt theory, although modified versions of the theory have been proposed in the past for the investigation of praseodymium doped materials. Here, we present a detailed spectroscopic investigation on two sets of calcium aluminosilicate glasses, with 34 wt% of SiO2(CAS) and with 7 wt% of SiO2(LSCAS), doped with different concentrations of Pr3+(0.5, 1.0 and 2.0 wt%). We use the standard Judd-Ofelt theory to characterize the glasses and the results and derived spectroscopic quantities - such as transition probabilities, radiative lifetimes and branching ratios - are compared to results obtained by the modified Judd-Ofelt theories. The analysis showed that the modified theories could lead to smaller values of root mean square deviations. However, a better agreement between experimental data and the standard theory was achieved when the derived spectroscopic quantities are taken into account. Moreover, the branching ratios of the P-3(0) -> H-3(4) and D-1(2) -> H-3(4) transitions were over 60% for both glass hosts, suggesting its potential use as solid-state laser devices. (C) 2018 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 17/16392-6 - Non-linear Spectroscopy of Solids Doped with Rare Earth ions
Grantee:Vitor Santaella Zanuto
Support Opportunities: Scholarships in Brazil - Post-Doctoral