Thermo-optical characteristics and concentration quenching effects in Nd(3+)doped yttrium calcium borate glasses

Author(s):Show less -

Santos, D. R. S. ^[1] ; Santos, C. N. ^{[2, 3, 4]} ; de Camargo, A. S. S. ^[2] ; Silva, W. F. ^[1] ; Santos, W. Q. ^[1] ; Vermelho, M. V. D. ^[1] ; Astrath, N. G. C. ^[5] ; Malacarne, L. C. ^[5] ; Li, M. S. ^[2] ; Hernandes, A. C. ^[2] ; Ibanez, A. ^{[3, 4]} ; Jacinto, C. ^[1]

Affiliation

^[1] Univ Fed Alagoas, Inst Fis, Grp Foton & Fluidos Complexos, BR-57072970 Maceio, Al - Brazil

^[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[3] CNRS, Inst Neel, F-38042 Grenoble 9 - France

^[4] Univ Grenoble 1, F-38042 Grenoble 9 - France

^[5] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, Parana - Brazil

• Document type: Journal article
• Source: Journal of Chemical Physics; v. 134, n. 12 MAR 28 2011.
• Web of Science Citations: 4

Abstract

In this work we present a comprehensive study of the spectroscopic and thermo-optical properties of a set of samples with composition xNd(2)O(3)-(5-x)Y(2)O(3-)40CaO-55B(2)O(3) (0 <= x <= 1.0 mol%). Their fluorescence quantum efficiency (eta) values were determined using the thermal lens technique and the dependence on the ionic concentration was analyzed in terms of energy transfer processes, based on the Forster-Dexter model of multipolar ion-ion interactions. A maximum eta = 0.54 was found to be substantially higher than for yttrium aluminoborate crystals and glasses with comparable Nd(3+) content. As for the thermo-optical properties of yttrium calcium borate, they are comparable to other well-known laser glasses. The obtained energy transfer microparameters and the weak dependence of. on the Nd(3+) concentration with a high optimum Nd(3+) concentration put this system as a strong candidate for photonics applications. (C) 2011 American Institute of Physics. {[}doi:10.1063/1.3567091] (AU)